while(1) in java code example

Example 1: what is a do while loop in java

do {
  //something you want to execute at least once
} while (someBooleanCondition);

Example 2: while loop in java

A while loop iterates a block of statements until condition is true. In a 
while loop condition is executed first.
Syntax:

while(condition)
{
   // code goes here
}

Example 3: java while

while (condition) {
  // code block to be executed
}