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.

1. TEST PROGRAM TAKEN FROM THE
PREVIOUS LESSONS

2. REMINDERS IN CREATING A CLASS
Make sure that
your class is inside
of the scr

3. BASIC OPERATORS AND ESCAPE
SEQUENCEimport java.util.*; //notes this called source file
public class BasicOperators {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner (System.in);
int L = 12;
float W = (float) 35.4;
float A =0;
//find the area of a rectangle
A = L * W;
System.out.println("The area of rectangle is:" +
A);
System.out.println("**************************");
//find the speed
float distance = 3; // 3km.
float time = 2;// 2 hrs.
float Speed;
Speed = distance / time;
System.out.println("The speed is:" + Speed);
System.out.println("**************************");

4. CONTINUATION:
//calculating my age; example only
int birthyear = 1992;
int presentyear = 2020;
int age;
age = presentyear - birthyear;
System.out.println("My age is :" + age);
System.out.println("***********************");
//calculating of modulus;
//calculating of modulus;
int V = 7,S = 5, m =0;
m = V % S;
System.out.println("The remainder oft" + V +
"tand " + S + "tist" + m); //note I uisng t
escape sequence for tab

5. OUTPUT:
The area of rectangle is:424.80002
************************************************
The speed is:1.5
************************************************
My age is :28
************************************************
The remainder of 7 and 5 is 2

6. IDENTIFYING THE PLACE VALUE OF
THE DIGIT
import java.util.*;
public class PlaceValue {
public static void main(String arg[]) {
Scanner Input = new Scanner (System.in);
//Variable Declaration
int num,Thousand,Hundreds,Tens,Ones;
int result1,result2,result3;
System.out.print("Enter number:");
num = Input.nextInt();
System.out.println("There are:");
//calculating the value of thousand
Thousand = num/1000;
System.out.println(Thousand + "Thousands");
//calculating the value of hundreds
result1 = num%1000;
Hundreds = result1/100;
System.out.println(Hundreds + "Hundreds");
//calculating the value of tens
result2 = num%100;
Tens = result2/10;
System.out.println(Tens + "Tens");

7. IDENTIFYING THE PLACE VALUE OF
THE DIGIT
//calculating the value of ones
result3 = num%10;
Ones = result3/1;
System.out.println(Ones + "Ones");
Input.close();
return ;
}
}
OUTPUT:
Enter number:6785
There are:
6Thousands
7Hundreds
8Tens
5Ones

8. COMBINATION OF LOGICAL AND
RELATIONAL OPERATORS
OUTPUT: