แก้งานย่อย 7
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This Java code uses a Scanner to prompt a user to input the width and length of a shape. It then calculates and prints the square area by multiplying the width and length that were entered by the user. The code is designed to calculate the area of a rectangle based on user input dimensions.
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![import java.util.Scanner;
public class Main {
public static void main(String[] args ) {
Scanner in = new Scanner(System.in);
System.out.println("KetsarapornKlomtooksing m.6/1
no.24");/* */
System.out.print("Input width : "); /* */
double width = in.nextDouble(); /* */
System.out.print("Input length : "); /* */
double length = in.nextDouble(); /* */
System.out.println("-----------------------");
System.out.println("square area : " + width * length); /*
*/
}
}
6/1 24](https://image.slidesharecdn.com/import-130304092612-phpapp01/85/7-1-320.jpg)
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บทที่ 3 พื้นฐานภาษา Java
นาย ณกาญจน์ อ่อนละออ เลขที่ 1
นาย ปัณณทัต เอกวชิราเดชากูล เลขที่ 2
นาย ชนิสร บุญแก้ว เลขที่ 4
นาย อิทธิกร ธรรมวิเศษ เลขที่ 5
นาย ณัฐวัฒน์ วรรณะ เลขที่ 6
นาย ธนานนท์ คุ้มครอง เลขที่ 8
นาย ปรินทร์ ไผทฉันท์ เลขที่ 9
นายอิทธิวัฒน์ วาสนาทิพย์ เลขที่ 12
ชั้น ม.6/1
งานย่อยที่ 7
This Java code defines a main method that takes in user input for a base area and adjacent area. It then prints out the result of multiplying the base area by the adjacent area. The code is asking the user to input dimensions, presumably of a shape, and then calculates and outputs the total area by multiplying the two dimensions together.
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Hi,I have updated your code. It is working fine now. Highllighted .pdf
Hi,
I have updated your code. It is working fine now. Highllighted all code changes below.
Shapes.java
import java.util.Scanner;
public class Shapes
{
private int radius;
public Shapes(int radius){
this.radius = radius;
}
public void setradius( int radius )
{
}
public int getradius()
{
return radius;
}
public void report()
{
System.out.printf( \"Circle perimeter, area / Sphere volume:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2. * Math.PI * getradius());
System.out.println();
System.out.printf( \" area : \" + Math.PI * getradius() * 1.);
System.out.println();
System.out.printf( \" volume : \" + (4 * Math.PI * Math.pow(getradius(),3)/3));
System.out.println();
System.out.printf( \"Square perimeter, area:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2 *Math.E * 1.);
System.out.println();
System.out.printf( \" area : \" + Math.E * 1.* 1);
System.out.println();
}
public static void main( String[] args )
{
//System.out.printf( \"Radius (as integer) of bounding sphere?\ %s!\ \", getradius() );
Scanner input = new Scanner( System.in );
System.out.println(\"Enter the radius:\");
int radius = input.nextInt();
Shapes s = new Shapes(radius);
s.report();
}
}
Output:
import java.util.Scanner;
public class Shapes
{
private int radius;
public Shapes(int radius){
this.radius = radius;
}
public void setradius( int radius )
{
}
public int getradius()
{
return radius;
}
public void report()
{
System.out.printf( \"Circle perimeter, area / Sphere volume:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2. * Math.PI * getradius());
System.out.println();
System.out.printf( \" area : \" + Math.PI * getradius() * 1.);
System.out.println();
System.out.printf( \" volume : \" + (4 * Math.PI * Math.pow(getradius(),3)/3));
System.out.println();
System.out.printf( \"Square perimeter, area:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2 *Math.E * 1.);
System.out.println();
System.out.printf( \" area : \" + Math.E * 1.* 1);
System.out.println();
}
public static void main( String[] args )
{
//System.out.printf( \"Radius (as integer) of bounding sphere?\ %s!\ \", getradius() );
Scanner input = new Scanner( System.in );
System.out.println(\"Enter the radius:\");
int radius = input.nextInt();
Shapes s = new Shapes(radius);
s.report();
}
}
Solution
Hi,
I have updated your code. It is working fine now. Highllighted all code changes below.
Shapes.java
import java.util.Scanner;
public class Shapes
{
private int radius;
public Shapes(int radius){
this.radius = radius;
}
public void setradius( int radius )
{
}
public int getradius()
{
return radius;
}
public void report()
{
System.out.printf( \"Circle perimeter, area / Sphere volume:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2. * Math.PI * getradius());
System.out.println();
System.out.printf( \" area : \" + Math.PI * getradius() * 1.);
System.out.println();
System.out.printf( \" volume : \" + (4 * Math.PI * Math.pow(getradius(),3)/3).
The java program that prompts user to enter a string and .pdf
/*
* The java program that prompts user to
* enter a string and shift key and then
* converts the string to the encoded string
* and prints the encoded string value to console.
* */
//CeaserCipher.java
import java.util.Scanner;
public class CeaserCipher
{
public static void main(String[] args)
{
Scanner scanner=new Scanner(System.in);
String message;
int shift;
System.out.println(\"Enter a message in small letters,a-z\");
message=scanner.nextLine();
System.out.println(\"Enter shift value\");
shift=scanner.nextInt();
//calling encode method with message, shift value
String encodedMsg=encode(message,shift);
//calling WriteMessage
WriteMessage(encodedMsg);
}
/*Method that prints the encoded text to console*/
private static void WriteMessage(String encodedMsg)
{
System.out.println(\"Encoded text :\"+encodedMsg);
}
//Method that takes string and integer value and returns
//the encoded string to calling method
private static String encode(String message, int shift)
{
StringBuffer sb=new StringBuffer(message);
for (int i = 0; i < message.length(); i++)
{
//shift to back to the alphabets
char encodedkey = (char) (\'a\' + (message.charAt(i) -\'a\' + shift) % (\'z\' - \'a\' + 1));
//set character at index,i
sb.setCharAt(i, encodedkey);
}
//return encoded string to calling method
return new String(sb);
}
}
Sample Output:
Enter a message in small letters,a-z
sunday is holiday
Enter shift value
5
Encoded text :xzsifdYnxYmtqnifd
Solution
/*
* The java program that prompts user to
* enter a string and shift key and then
* converts the string to the encoded string
* and prints the encoded string value to console.
* */
//CeaserCipher.java
import java.util.Scanner;
public class CeaserCipher
{
public static void main(String[] args)
{
Scanner scanner=new Scanner(System.in);
String message;
int shift;
System.out.println(\"Enter a message in small letters,a-z\");
message=scanner.nextLine();
System.out.println(\"Enter shift value\");
shift=scanner.nextInt();
//calling encode method with message, shift value
String encodedMsg=encode(message,shift);
//calling WriteMessage
WriteMessage(encodedMsg);
}
/*Method that prints the encoded text to console*/
private static void WriteMessage(String encodedMsg)
{
System.out.println(\"Encoded text :\"+encodedMsg);
}
//Method that takes string and integer value and returns
//the encoded string to calling method
private static String encode(String message, int shift)
{
StringBuffer sb=new StringBuffer(message);
for (int i = 0; i < message.length(); i++)
{
//shift to back to the alphabets
char encodedkey = (char) (\'a\' + (message.charAt(i) -\'a\' + shift) % (\'z\' - \'a\' + 1));
//set character at index,i
sb.setCharAt(i, encodedkey);
}
//return encoded string to calling method
return new String(sb);
}
}
Sample Output:
Enter a message in small letters,a-z
sunday is holiday
Enter shift value
5
Encoded text :xzsifdYnxYmtqnifd.
Star pattern programs in java Print Star pattern in java and print triangle ...
Print Star pattern in java and print triangle of stars in java, print star triangle of java, * pattern in java
import java.util.Scanner;public class ArrayOperation { inp.pdf
import java.util.Scanner;
public class ArrayOperation {
/* input method implementation */
public static double[] input() {
Scanner sc = new Scanner(System.in);
System.out.println(\"Please enter the size of array\");
int n = sc.nextInt();
double number[] = new double[n];
/* Inserting element to array */
for (int i = 0; i < n; i++) {
number[i] = sc.nextDouble();
}
/* printing array by calling print method */
print(number);
return number;
}
public static void print(double number[]) {
/* Printing array */
for (int i = 0; i < number.length; i++) {
System.out.print(number[i] + \" \");
}
System.out.println();
}
/* sqrtnumber method implemantation */
public static void sqrtNumber(double number[]) {
/* Printing sqrt of numbers */
System.out.println(\"Square root of Number of an array\");
for (int i = 0; i < number.length; i++) {
double num = Math.sqrt(number[i]);
System.out.println(num);
}
}
public static void main(String args[]) {
/* Calling initaize array */
double number[] = input();
/* calling sqrtnumber */
sqrtNumber(number);
}
}
/***********output*****************/
Please enter the size of array
5
5
6
7
8
14
5.0 6.0 7.0 8.0 14.0
Square root of Number of an array
2.23606797749979
2.449489742783178
2.6457513110645907
2.8284271247461903
3.7416573867739413
Solution
import java.util.Scanner;
public class ArrayOperation {
/* input method implementation */
public static double[] input() {
Scanner sc = new Scanner(System.in);
System.out.println(\"Please enter the size of array\");
int n = sc.nextInt();
double number[] = new double[n];
/* Inserting element to array */
for (int i = 0; i < n; i++) {
number[i] = sc.nextDouble();
}
/* printing array by calling print method */
print(number);
return number;
}
public static void print(double number[]) {
/* Printing array */
for (int i = 0; i < number.length; i++) {
System.out.print(number[i] + \" \");
}
System.out.println();
}
/* sqrtnumber method implemantation */
public static void sqrtNumber(double number[]) {
/* Printing sqrt of numbers */
System.out.println(\"Square root of Number of an array\");
for (int i = 0; i < number.length; i++) {
double num = Math.sqrt(number[i]);
System.out.println(num);
}
}
public static void main(String args[]) {
/* Calling initaize array */
double number[] = input();
/* calling sqrtnumber */
sqrtNumber(number);
}
}
/***********output*****************/
Please enter the size of array
5
5
6
7
8
14
5.0 6.0 7.0 8.0 14.0
Square root of Number of an array
2.23606797749979
2.449489742783178
2.6457513110645907
2.8284271247461903
3.7416573867739413.
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2) Declaring and initializing variables of different primitive data types;
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Bubba.java import java.util.Scanner;package for keyboard input.pdf
Bubba.java
import java.util.Scanner;//package for keyboard inputting
/**
*
Chegg */
public class Bubba {//main class name
public static void main(String args[]) {//main method
String name;//variable declaration
int num1, num2,a,b,c,e;
float d;
System.out.println(\"---------------------------------------------\");
System.out.println(\"---------------------------------------------\");
Scanner sc = new Scanner(System.in);//scanner clas for keyboard inputting
System.out.print(\"please your name \");
name = sc.next();//keyboard inputting
System.out.print(\"please enter an integer \");
num1 = sc.nextInt();//keyboard inputting
System.out.print(\"please enter another integer \");
num2 = sc.nextInt();
System.out.println(\"---------------------------------------------\");
System.out.println(\"----------------------------------------------\");
//calculations
a=num1 + num2;
b=num1 - num2;
c=num1 * num2;
d=(float)num1 /(float) num2;
e=num1%num2;
System.out.println(a);
System.out.println(b);
System.out.println(c);
System.out.println(d);
System.out.println(e);
System.out.println(\"-----------------------------------------------\");
System.out.println(\"------------------------------------------------\");
}
}
output
---------------------------------------------
---------------------------------------------
please your name adams
please enter an integer 5
please enter another integer 4
---------------------------------------------
----------------------------------------------
9
1
20
1.25
1
-----------------------------------------------
------------------------------------------------
Solution
Bubba.java
import java.util.Scanner;//package for keyboard inputting
/**
*
Chegg */
public class Bubba {//main class name
public static void main(String args[]) {//main method
String name;//variable declaration
int num1, num2,a,b,c,e;
float d;
System.out.println(\"---------------------------------------------\");
System.out.println(\"---------------------------------------------\");
Scanner sc = new Scanner(System.in);//scanner clas for keyboard inputting
System.out.print(\"please your name \");
name = sc.next();//keyboard inputting
System.out.print(\"please enter an integer \");
num1 = sc.nextInt();//keyboard inputting
System.out.print(\"please enter another integer \");
num2 = sc.nextInt();
System.out.println(\"---------------------------------------------\");
System.out.println(\"----------------------------------------------\");
//calculations
a=num1 + num2;
b=num1 - num2;
c=num1 * num2;
d=(float)num1 /(float) num2;
e=num1%num2;
System.out.println(a);
System.out.println(b);
System.out.println(c);
System.out.println(d);
System.out.println(e);
System.out.println(\"-----------------------------------------------\");
System.out.println(\"------------------------------------------------\");
}
}
output
---------------------------------------------
---------------------------------------------
please your name adams
please enter an integer 5
please enter another integer 4.
Java programs
Sample java programs for beginners. This slides can help you to print few words in java. Also it helps to do arithmetic calculations and will give you basic concept of for loop, do while loop and if else statements in java. Area of a square.
Test Program - Basic operators
This document provides examples of Java code for basic operators, calculating place value of digits in a number, and using logical and relational operators. It includes code snippets for calculating area and speed, determining age based on birth year, using modulus operator, and identifying thousands, hundreds, tens, and ones places in a user-entered number. The code snippets are accompanied by comments explaining the logic and output.
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บทที่ 3 พื้นฐานภาษา Java
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Similar to แก้งานย่อย 7
งานย่อยที่ 7
This Java code defines a main method that takes in user input for a base area and adjacent area. It then prints out the result of multiplying the base area by the adjacent area. The code is asking the user to input dimensions, presumably of a shape, and then calculates and outputs the total area by multiplying the two dimensions together.
KOLEJ KOMUNITI - Sijil Aplikasi Perisian Komputer
This document discusses using the Scanner class in Java to take user input from the console. It explains the different Scanner methods like nextInt(), nextDouble(), etc. for reading different data types. It provides examples of programs that take user input, perform calculations, and output results. It also includes exercises for students to practice writing programs that take multiple user inputs and perform operations like addition, multiplication, averaging marks, and calculating area and volume using user-provided values.
import java.uti-WPS Office.docx
The document contains code for several Java programs. The first program takes a number input and checks if it is evenly divisible by 9. The second program calculates the areas of different shapes like rectangle, circle and triangle by taking length, width, radius or base and height as user input. The third program is a menu to order drinks from a pub by selecting different drinks and entering the quantity. It calculates and displays the total cost. The last program calculates distance traveled by taking speed and time as input.
Java file
The document contains 17 code snippets that demonstrate various Java programming concepts like loops, arrays, methods, classes, input/output, etc. Specifically, the code snippets show:
1. Using for loops to print numeric series
2. Accepting user input of different data types using Scanner and parsing
3. Using StringTokenizer and Scanner classes
4. Finding largest number among 3 inputs and printing tables
5. Demonstrating 2D arrays, array of objects, and command line arguments
6. Various String class methods like length(), substring(), indexOf() etc.
Java file
The document contains 21 programming problems involving Java concepts like arrays, loops, methods, classes, objects, constructors, and more. For each problem, source code is provided to demonstrate how to solve the problem, followed by sample output. Some key problems include: (1) printing series using nested loops, (2) receiving user input of different data types, (3) using StringTokenizer and Scanner classes, (4) finding largest of 3 numbers, (5) using 2D arrays and array of objects.
Hi,I have updated your code. It is working fine now. Highllighted .pdf
Hi,
I have updated your code. It is working fine now. Highllighted all code changes below.
Shapes.java
import java.util.Scanner;
public class Shapes
{
private int radius;
public Shapes(int radius){
this.radius = radius;
}
public void setradius( int radius )
{
}
public int getradius()
{
return radius;
}
public void report()
{
System.out.printf( \"Circle perimeter, area / Sphere volume:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2. * Math.PI * getradius());
System.out.println();
System.out.printf( \" area : \" + Math.PI * getradius() * 1.);
System.out.println();
System.out.printf( \" volume : \" + (4 * Math.PI * Math.pow(getradius(),3)/3));
System.out.println();
System.out.printf( \"Square perimeter, area:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2 *Math.E * 1.);
System.out.println();
System.out.printf( \" area : \" + Math.E * 1.* 1);
System.out.println();
}
public static void main( String[] args )
{
//System.out.printf( \"Radius (as integer) of bounding sphere?\ %s!\ \", getradius() );
Scanner input = new Scanner( System.in );
System.out.println(\"Enter the radius:\");
int radius = input.nextInt();
Shapes s = new Shapes(radius);
s.report();
}
}
Output:
import java.util.Scanner;
public class Shapes
{
private int radius;
public Shapes(int radius){
this.radius = radius;
}
public void setradius( int radius )
{
}
public int getradius()
{
return radius;
}
public void report()
{
System.out.printf( \"Circle perimeter, area / Sphere volume:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2. * Math.PI * getradius());
System.out.println();
System.out.printf( \" area : \" + Math.PI * getradius() * 1.);
System.out.println();
System.out.printf( \" volume : \" + (4 * Math.PI * Math.pow(getradius(),3)/3));
System.out.println();
System.out.printf( \"Square perimeter, area:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2 *Math.E * 1.);
System.out.println();
System.out.printf( \" area : \" + Math.E * 1.* 1);
System.out.println();
}
public static void main( String[] args )
{
//System.out.printf( \"Radius (as integer) of bounding sphere?\ %s!\ \", getradius() );
Scanner input = new Scanner( System.in );
System.out.println(\"Enter the radius:\");
int radius = input.nextInt();
Shapes s = new Shapes(radius);
s.report();
}
}
Solution
Hi,
I have updated your code. It is working fine now. Highllighted all code changes below.
Shapes.java
import java.util.Scanner;
public class Shapes
{
private int radius;
public Shapes(int radius){
this.radius = radius;
}
public void setradius( int radius )
{
}
public int getradius()
{
return radius;
}
public void report()
{
System.out.printf( \"Circle perimeter, area / Sphere volume:\");
System.out.println();
System.out.printf( \" perimeter : \" + 2. * Math.PI * getradius());
System.out.println();
System.out.printf( \" area : \" + Math.PI * getradius() * 1.);
System.out.println();
System.out.printf( \" volume : \" + (4 * Math.PI * Math.pow(getradius(),3)/3).
The java program that prompts user to enter a string and .pdf
/*
* The java program that prompts user to
* enter a string and shift key and then
* converts the string to the encoded string
* and prints the encoded string value to console.
* */
//CeaserCipher.java
import java.util.Scanner;
public class CeaserCipher
{
public static void main(String[] args)
{
Scanner scanner=new Scanner(System.in);
String message;
int shift;
System.out.println(\"Enter a message in small letters,a-z\");
message=scanner.nextLine();
System.out.println(\"Enter shift value\");
shift=scanner.nextInt();
//calling encode method with message, shift value
String encodedMsg=encode(message,shift);
//calling WriteMessage
WriteMessage(encodedMsg);
}
/*Method that prints the encoded text to console*/
private static void WriteMessage(String encodedMsg)
{
System.out.println(\"Encoded text :\"+encodedMsg);
}
//Method that takes string and integer value and returns
//the encoded string to calling method
private static String encode(String message, int shift)
{
StringBuffer sb=new StringBuffer(message);
for (int i = 0; i < message.length(); i++)
{
//shift to back to the alphabets
char encodedkey = (char) (\'a\' + (message.charAt(i) -\'a\' + shift) % (\'z\' - \'a\' + 1));
//set character at index,i
sb.setCharAt(i, encodedkey);
}
//return encoded string to calling method
return new String(sb);
}
}
Sample Output:
Enter a message in small letters,a-z
sunday is holiday
Enter shift value
5
Encoded text :xzsifdYnxYmtqnifd
Solution
/*
* The java program that prompts user to
* enter a string and shift key and then
* converts the string to the encoded string
* and prints the encoded string value to console.
* */
//CeaserCipher.java
import java.util.Scanner;
public class CeaserCipher
{
public static void main(String[] args)
{
Scanner scanner=new Scanner(System.in);
String message;
int shift;
System.out.println(\"Enter a message in small letters,a-z\");
message=scanner.nextLine();
System.out.println(\"Enter shift value\");
shift=scanner.nextInt();
//calling encode method with message, shift value
String encodedMsg=encode(message,shift);
//calling WriteMessage
WriteMessage(encodedMsg);
}
/*Method that prints the encoded text to console*/
private static void WriteMessage(String encodedMsg)
{
System.out.println(\"Encoded text :\"+encodedMsg);
}
//Method that takes string and integer value and returns
//the encoded string to calling method
private static String encode(String message, int shift)
{
StringBuffer sb=new StringBuffer(message);
for (int i = 0; i < message.length(); i++)
{
//shift to back to the alphabets
char encodedkey = (char) (\'a\' + (message.charAt(i) -\'a\' + shift) % (\'z\' - \'a\' + 1));
//set character at index,i
sb.setCharAt(i, encodedkey);
}
//return encoded string to calling method
return new String(sb);
}
}
Sample Output:
Enter a message in small letters,a-z
sunday is holiday
Enter shift value
5
Encoded text :xzsifdYnxYmtqnifd.
Star pattern programs in java Print Star pattern in java and print triangle ...
Print Star pattern in java and print triangle of stars in java, print star triangle of java, * pattern in java
import java.util.Scanner;public class ArrayOperation { inp.pdf
import java.util.Scanner;
public class ArrayOperation {
/* input method implementation */
public static double[] input() {
Scanner sc = new Scanner(System.in);
System.out.println(\"Please enter the size of array\");
int n = sc.nextInt();
double number[] = new double[n];
/* Inserting element to array */
for (int i = 0; i < n; i++) {
number[i] = sc.nextDouble();
}
/* printing array by calling print method */
print(number);
return number;
}
public static void print(double number[]) {
/* Printing array */
for (int i = 0; i < number.length; i++) {
System.out.print(number[i] + \" \");
}
System.out.println();
}
/* sqrtnumber method implemantation */
public static void sqrtNumber(double number[]) {
/* Printing sqrt of numbers */
System.out.println(\"Square root of Number of an array\");
for (int i = 0; i < number.length; i++) {
double num = Math.sqrt(number[i]);
System.out.println(num);
}
}
public static void main(String args[]) {
/* Calling initaize array */
double number[] = input();
/* calling sqrtnumber */
sqrtNumber(number);
}
}
/***********output*****************/
Please enter the size of array
5
5
6
7
8
14
5.0 6.0 7.0 8.0 14.0
Square root of Number of an array
2.23606797749979
2.449489742783178
2.6457513110645907
2.8284271247461903
3.7416573867739413
Solution
import java.util.Scanner;
public class ArrayOperation {
/* input method implementation */
public static double[] input() {
Scanner sc = new Scanner(System.in);
System.out.println(\"Please enter the size of array\");
int n = sc.nextInt();
double number[] = new double[n];
/* Inserting element to array */
for (int i = 0; i < n; i++) {
number[i] = sc.nextDouble();
}
/* printing array by calling print method */
print(number);
return number;
}
public static void print(double number[]) {
/* Printing array */
for (int i = 0; i < number.length; i++) {
System.out.print(number[i] + \" \");
}
System.out.println();
}
/* sqrtnumber method implemantation */
public static void sqrtNumber(double number[]) {
/* Printing sqrt of numbers */
System.out.println(\"Square root of Number of an array\");
for (int i = 0; i < number.length; i++) {
double num = Math.sqrt(number[i]);
System.out.println(num);
}
}
public static void main(String args[]) {
/* Calling initaize array */
double number[] = input();
/* calling sqrtnumber */
sqrtNumber(number);
}
}
/***********output*****************/
Please enter the size of array
5
5
6
7
8
14
5.0 6.0 7.0 8.0 14.0
Square root of Number of an array
2.23606797749979
2.449489742783178
2.6457513110645907
2.8284271247461903
3.7416573867739413.
Main Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
All Of My Java Codes With A Sample Output.docx
Contains All of the Java Programs from Beginning to the Advanced Concepts that I had Practiced While Learning Java
Java doc Pr ITM2
The document contains code examples demonstrating Java programming concepts like:
1) Printing output to the console using System.out.println();
2) Declaring and initializing variables of different primitive data types;
3) Using the Scanner class to take user input;
4) Demonstrating inheritance between classes through extending superclasses; and
5) Overloading constructors.
Bubba.java import java.util.Scanner;package for keyboard input.pdf
Bubba.java
import java.util.Scanner;//package for keyboard inputting
/**
*
Chegg */
public class Bubba {//main class name
public static void main(String args[]) {//main method
String name;//variable declaration
int num1, num2,a,b,c,e;
float d;
System.out.println(\"---------------------------------------------\");
System.out.println(\"---------------------------------------------\");
Scanner sc = new Scanner(System.in);//scanner clas for keyboard inputting
System.out.print(\"please your name \");
name = sc.next();//keyboard inputting
System.out.print(\"please enter an integer \");
num1 = sc.nextInt();//keyboard inputting
System.out.print(\"please enter another integer \");
num2 = sc.nextInt();
System.out.println(\"---------------------------------------------\");
System.out.println(\"----------------------------------------------\");
//calculations
a=num1 + num2;
b=num1 - num2;
c=num1 * num2;
d=(float)num1 /(float) num2;
e=num1%num2;
System.out.println(a);
System.out.println(b);
System.out.println(c);
System.out.println(d);
System.out.println(e);
System.out.println(\"-----------------------------------------------\");
System.out.println(\"------------------------------------------------\");
}
}
output
---------------------------------------------
---------------------------------------------
please your name adams
please enter an integer 5
please enter another integer 4
---------------------------------------------
----------------------------------------------
9
1
20
1.25
1
-----------------------------------------------
------------------------------------------------
Solution
Bubba.java
import java.util.Scanner;//package for keyboard inputting
/**
*
Chegg */
public class Bubba {//main class name
public static void main(String args[]) {//main method
String name;//variable declaration
int num1, num2,a,b,c,e;
float d;
System.out.println(\"---------------------------------------------\");
System.out.println(\"---------------------------------------------\");
Scanner sc = new Scanner(System.in);//scanner clas for keyboard inputting
System.out.print(\"please your name \");
name = sc.next();//keyboard inputting
System.out.print(\"please enter an integer \");
num1 = sc.nextInt();//keyboard inputting
System.out.print(\"please enter another integer \");
num2 = sc.nextInt();
System.out.println(\"---------------------------------------------\");
System.out.println(\"----------------------------------------------\");
//calculations
a=num1 + num2;
b=num1 - num2;
c=num1 * num2;
d=(float)num1 /(float) num2;
e=num1%num2;
System.out.println(a);
System.out.println(b);
System.out.println(c);
System.out.println(d);
System.out.println(e);
System.out.println(\"-----------------------------------------------\");
System.out.println(\"------------------------------------------------\");
}
}
output
---------------------------------------------
---------------------------------------------
please your name adams
please enter an integer 5
please enter another integer 4.
Java programs
Sample java programs for beginners. This slides can help you to print few words in java. Also it helps to do arithmetic calculations and will give you basic concept of for loop, do while loop and if else statements in java. Area of a square.
Test Program - Basic operators
This document provides examples of Java code for basic operators, calculating place value of digits in a number, and using logical and relational operators. It includes code snippets for calculating area and speed, determining age based on birth year, using modulus operator, and identifying thousands, hundreds, tens, and ones places in a user-entered number. The code snippets are accompanied by comments explaining the logic and output.
The java program Jumble that prompts user to enter nu.pdf
/**
* The java program Jumble that prompts user to
* enter number of words.Then prompts for words
* of the string.
* Then calls the permute method of the class
* MyString and prints the permutations of
* the strings to console
* */
//Jumble.java
import java.util.Scanner;
public class Jumble
{
public static void main(String[] args)
{
//Create an instance of Scanner class
Scanner scanner=new Scanner(System.in);
//set num=0
int num = 0;
MyString ms=null;
System.out.println(\"How many words?\");
//prompt for num value
num=Integer.parseInt(scanner.nextLine());
//create an array of type string
String[] words=new String[num];
//prompt for words
System.out.println(\"Enter the words:\");
for (int i = 0; i < num; i++)
{
words[i]=scanner.nextLine();
}
//Run for loop for given words length
for (int i = 0; i < words.length; i++)
{
//create an instance of MyString with words at index
ms=new MyString(words[i]);
for (int j = 0; j < 4; j++)
{
//call permute
System.out.println(ms.permute());
}
}
}
}
----------------------------------------------------------------------------------------------------
//MyString.java
import java.util.Random;
public class MyString
{
//create an instance of Random class
private Random r=new Random();
//instance variable,str
private String str;
//constructor
public MyString(String str)
{
this.str=str;
}
//print the string
public void printMe()
{
System.out.println(str);
}
/*
* Permute method that permutes the string
* and return permuted string .
* */
public String permute()
{
//Create an instance of StringBuffer class with string value
StringBuffer sb=new StringBuffer(str);
//swap for n times
for (int i = sb.length()-1;i>0; i--)
{
int rand = r.nextInt(sb.length());
char temp = sb.charAt(i);
sb.setCharAt(i, sb.charAt(rand));
sb.setCharAt(rand, temp);
}
//swap for n times,so total 2n times
for (int i = sb.length()-1;i>0; i--)
{
int rand = r.nextInt(sb.length());
char temp = sb.charAt(i);
sb.setCharAt(i, sb.charAt(rand));
sb.setCharAt(rand, temp);
}
return new String(sb);
}
}
----------------------------------------------------------------------------------------------------
Sample output:
How many words?
3
Enter the words:
mixed
calendar
then
dmexi
imxed
emixd
idmex
nalrdaec
candreal
aalrdcen
claadner
tenh
tnhe
etnh
tneh
Solution
/**
* The java program Jumble that prompts user to
* enter number of words.Then prompts for words
* of the string.
* Then calls the permute method of the class
* MyString and prints the permutations of
* the strings to console
* */
//Jumble.java
import java.util.Scanner;
public class Jumble
{
public static void main(String[] args)
{
//Create an instance of Scanner class
Scanner scanner=new Scanner(System.in);
//set num=0
int num = 0;
MyString ms=null;
System.out.println(\"How many words?\");
//prompt for num value
num=Integer.parseInt(scanner.nextLine());
//create an array of type string
String[] words=new String[num];
//prompt for words
System.out.println(\"Enter the words:\");
for (int i = 0; i < num; i++).
Sam wd programs
The document provides an index and descriptions of various topics related to web development including:
1. The modulus operator and examples of using it to check for divisibility.
2. Relational and logical operators like greater than, less than, equal to and examples of using them in code.
3. Descriptions of do-while and for loops with examples.
4. An example using a parameterized constructor to initialize cube dimensions.
5. Examples of string methods like startsWith, length, and trim.
6. Descriptions and examples of overloading methods and constructors.
7. An example of inheritance with overriding methods.
8. An interface example with animal classes
java input & output statements
The document provides examples of Java code for printing "Hello World", getting different types of user input including integer, float, double, string, and character, and printing outputs. It includes code snippets using classes, importing packages like Scanner, and using methods like println, nextInt, nextFloat etc. to get input and display output in Java programs.
Frequency .java Word frequency counter package frequ.pdf
Frequency .java
/**
* Word frequency counter
*/
package frequency;
import java.util.Iterator;
/**
*
* @author UMD CS
*/
public class Frequency implements Iterable{
private Node first;
private int N;
Frequency(){
N = 0;
first = null;
}
@Override
public Iterator iterator() {
return new ListIterator();
}
/**
*
* List iterator
*
*/
private class ListIterator implements Iterator{
private Node current;
private int index ;
ListIterator(){
current = first;
index = 0;
}
@Override
public boolean hasNext() {
return current != null;
}
public String next() {
if(!hasNext()){
return null;
}
String word = current.key;
int count = current.count;
String r = \"(\"+word + \",\" + Integer.toString(count)+\")\";
current = current.next;
return r;
}
@Override
public void remove() {
}
}
/**
*
* Node class
*
*/
private class Node {
private String key;
private int count;
private Node next;
Node(String item){
key = item;
count = 1;
next = null;
}
@Override
public String toString(){
return \"(\"+key +\",\"+count+\")\";
}
}
/*
* Inserts a word into the linked list. If the word exists, increment the
* count by q.
*/
public void insert(String word){
if(word.equals(\"\")){
return;
}
//TODO
/*
* implement here
*/
}
/**
*
* @param str input string
* This method splits a string into words and pass the words to insert method
*
*/
public void insertWords(String str){
String delims = \"[ .,?!\'\\\"()}{;/<>&=#-:\\\\ _]+\";
String[] words = str.split(delims);
for(String s: words){
s = s.toLowerCase();
insert(s);
}
}
/**
* prints the word frequency list
*/
public void print(){
Node c = first;
while(c != null){
System.out.print(\"(\"+c.key + \",\" + c.count+\")\");
c = c.next;
}
System.out.print(\"\ \");
}
}
--------------------------------------------------------------------------------------------------------------------
------------------------------------------------------
WordFrequency.java
package frequency;
import utils.In;
import utils.Stopwatch;
/**
*
* @author UMD CS
*/
public class WordFrequency {
/**
* @param input source
* @param
* This method receives input resource and return the word frequency string
* DO NOT CHANGE THIS METHOD.
*/
public static String freq(String inputSource, int maxLines){
In in;
// Frequency class can only count the frequency of strings. DO NOT CHANGE THIS.
Frequency freq = new Frequency();
int MAX = 100;
String inputSourceName = inputSource;
try {
in = new In(inputSourceName);
while (!in.isEmpty()) {
String s = in.readLine();
//System.out.println(s);
freq.insertWords(s);
}
}
catch (Exception e) {
e.printStackTrace();
}
StringBuilder strFrequency = new StringBuilder();
int cnt = 0;
for(String s: freq){
strFrequency.append(s);
strFrequency.append(\",\");
cnt++;
if(cnt >= maxLines){break;}
}
return strFrequency.toString();
}
/**
*
*/
public static void main(String[] args) {
In in;
Frequency freq = new Frequency();
int MAX = 100;
// String inputSourceName =
\"http://www.cs.umd.edu/class/summer2015/cmsc132/projects/P3_WordFrequency/test1.html\";
String .
Vo.pdf
//*********************************************************
// VowelCount.java
//
// This program counts the number of vowels in a string
//*********************************************************
import java.util.Scanner;
public class VowelCount {
public static void main(String[] args) {
/*
* declare variables to store the number of each type of vowel
*/
int countA = 0, countE = 0, countI = 0, countO = 0, countU = 0;
Scanner scan = new Scanner(System.in);
// Get the string from the user (prompt and input)
System.out.println(\"Enter a string of characters:\");
String str = scan.nextLine();
// format for this part:
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i)) {
case \'a\':
case \'A\':
countA++;
break;
case \'e\':
case \'E\':
countE++;
break;
case \'i\':
case \'I\':
countI++;
break;
case \'o\':
case \'O\':
countO++;
break;
case \'u\':
case \'U\':
countU++;
break;
default:
break;
}
}
/*
* Remember: 1) condition should use method for getting string length 2)
* exp (in switch) should use method for returning a character
*/
// Output results
System.out.println(\"Number of each vowel in the string:\ a: \" + countA
+ \"\ e: \" + countE + \"\ i: \" + countI + \"\ o: \" + countO
+ \"\ u: \" + countU);
}
}
OUTPUT:
Enter a string of characters:
Hello! I am Finn from the land of Ooo.
Number of each vowel in the string:
a: 2
e: 2
i: 2
o: 6
u: 0
Solution
//*********************************************************
// VowelCount.java
//
// This program counts the number of vowels in a string
//*********************************************************
import java.util.Scanner;
public class VowelCount {
public static void main(String[] args) {
/*
* declare variables to store the number of each type of vowel
*/
int countA = 0, countE = 0, countI = 0, countO = 0, countU = 0;
Scanner scan = new Scanner(System.in);
// Get the string from the user (prompt and input)
System.out.println(\"Enter a string of characters:\");
String str = scan.nextLine();
// format for this part:
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i)) {
case \'a\':
case \'A\':
countA++;
break;
case \'e\':
case \'E\':
countE++;
break;
case \'i\':
case \'I\':
countI++;
break;
case \'o\':
case \'O\':
countO++;
break;
case \'u\':
case \'U\':
countU++;
break;
default:
break;
}
}
/*
* Remember: 1) condition should use method for getting string length 2)
* exp (in switch) should use method for returning a character
*/
// Output results
System.out.println(\"Number of each vowel in the string:\ a: \" + countA
+ \"\ e: \" + countE + \"\ i: \" + countI + \"\ o: \" + countO
+ \"\ u: \" + countU);
}
}
OUTPUT:
Enter a string of characters:
Hello! I am Finn from the land of Ooo.
Number of each vowel in the string:
a: 2
e: 2
i: 2
o: 6
u: 0.
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