difference between while and do while loop in java

by February 13, 2021 Java

Let’s learn difference between while and do while loop in java.

difference between while and do while loop in java

while loopdo while loop
while loop will check condition before the loop starts.do while loop will check condition after the loop starts.
while loop will run zero times.do while loop will run at least once.
while loop executes code only if the condition is true.do while loop executes statements at least once even if condition fails.

Let’s see an example on difference between while and do-while loop in java.

// while loop runs zero times
int a = 20;
while(a < 5)  // here condition executes false
{
   System.out.println("hello world");
   a++;
}

---------------------------------------------------------

// do-while loop
int a = 20;
do{
   System.out.println("hello world");
   a++;
}while(a < 5);  // here condition executes false

Also read – major features of java