If statements in Java is used to control the program flow based on some condition, it's used to execute some statement code block if the expression evaluated to true; otherwise, it will get skipped. This statement is the simplest way to modify the control flow of the program.
The basic format of if statement is:
Syntax:
if(test_expression)
{
statement 1;
statement 2;
...
}
'Statement n' can be a statement or a set of statements, and if the test expression evaluated to true, the statement block will get executed, or it will get skipped.
Figure - Flowchart of if Statement:
Example of a Java Program to Demonstrate If statements
Example:
public class Sample{
public static void main(String args[]){
int a=20, b=30;
if(b>a)
System.out.println("b is greater");
}
}
Program Output: