Can somebody help in explaining "While loop"??

Answer 1

It will keep loop as long the condition is true.

// This is an infinite loop this wont stop loop until you do it.
while(true){
System.out.println("a loop");
}

// Another example

int num = 1;
while(num <= 5){
System.out.println(num);
num++; // for each loop we add 1
}
// The above example will keep loop until num is less or equals 5

Answer 2

The while statement is called a loop structure because it executes statements repeatedly while an expression is true, looping over and over again.
The expression evaluates to either true or false, and statements can be a single statement or, more commonly, a code block enclosed by curly braces { }.
The while loop evaluates a condition before the loop is entered, making it possible that the while statements never execute.
The break statement is useful for immediately exiting a loop. When you want to remain in the loop, but skip ahead to the next iteration, you use the continue statement.

Answer 3

Thanku