This document discusses basic control structures and loops in Java. It covers conditional statements like if-else and switch statements. It also discusses arrays, including declaring and processing arrays. Additionally, it covers strings as sequences of characters that can be accessed and manipulated using methods like length(), concat(), and substring().

1. Object Oriented
Programming
Lab no 5
Basic control structures and loops in JAVA

2. Conditional statements
• Basic 2 ways of conditional statements in java
1. If statements
a. if-else
b. if -else if- else
2. Switch Statements

3. If-else statements
• Syntax
if (condition)
{
// runs if condition will be
true
}
else
{
// runs when condition will be
false
}
• Example

4. If else if statement
• Syntax
if (condition)
{
// runs if condition will be true
}
else if(condition)
{ // runs if this condition will be true
}
else
{
// runs when condition will be false
}

5. Switch Statements

6. Arrays
Array are the type of data structures, which stores a fixed-size sequential collection
of elements of the same type.

7. Declaring Arrays in Java
For example:
int a[]= new int [5];

8. Processing arrays

9. Passing arrays to methods as arguments

10. 2D arrays

11. Strings
Strings are termed as sequence of characters or array of characters

12. Accessor Methods
• Methods used to obtain information about an object are known
as accessor methods.
• For example
1. length of string
2. concatenating two strings

13. Finding length of string
• It returns number of character
contained in the string
• How to use
String name=“maria”;
Int length= name.length();
Concatenating two strings
• It returns a new string which
contains string 1 and staring 2
added to each other at the end
• How to use
string1.concat(string2);
Commonly; we use ‘+’ operator to
combine two strings
String string1=“maria”;
System.out.println(“My name
is”+string1);

14. Substring : Method of substring

15. Explore additional methods
of string..