Simple Java While Loop Example

Simple Java While Loop Example

Java While Loop is used to iterate a program code for non-specified number of times.

Syntax:

 while(condition)  
 {  
 //execute this code if condition is true  
 }  

Example:

 

public class WhileLoop {
    public static void main(String args[])
    {
   int num=1;
    while (num<=9)
    {
    System.out.println("Number is  "+num);
   
   num++;
    }
        
        
    }
    
    
}

Output:

 Number is 1  
 Number is 2  
 Number is 3  
 Number is 4  
 Number is 5  
 Number is 6  
 Number is 7  
 Number is 8  
 Number is 9  
 BUILD SUCCESSFUL (total time: 0 seconds)  

Java Infinitive While Loop

If we replace the condition with boolean true,while loop becomes infinitive while loop.

Syntax:

 while(true)  
 {  
 //execute this code here  
 }  

Example:

 
public class InfinitiveLoop
 { 
public static void main(String args[]) 
{ 

while (true) 

{ 

System.out.println("Infinitive Java While Loop");
 }
 } 
}

Output:

 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While Loop  
 Infinitive Java While LoopBUILD STOPPED (total time: 1 second)