A Java while loop is a looping construct which continually executes a block of statements while a condition remains true.
Java while loop syntax
The syntax of a while loop in Java is:
while (expression) {
statement
}
Example Java while loop
Here is a Java while loop that prints the numbers 1 through 10.
int loopvar = 1; // Declare and initialize the loop counter
while (loopvar <= 10) { // Test and loop
System.out.println(loopvar); // Print the variable
loopvar = loopvar + 1; // Increment the loop counter
} 
