====== while =====
<code java>
while (condition) {

//command

}
</code>

a while loop do something while a condition

===== example of while loop in java =====
<code java>
package codereferececomjava;

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

        int i=4;
              
        while(i==4) {
        
             i++;
         }
         
        System.out.println("i is :" + i );
    }
}
</code>

=== output of while ===
    i is :5