Break and Continue in Java-CodePudding

//        int i=0;
//        while(i<5){
//            System.out.println(i);
//            System.out.println("Java is great.");
//            if (i==2){
//                System.out.println("Ending the Loop.");
//                break;
//
//            }
//          i  ;    //DOUBT:WHEN I WRITE i   AFTER 4TH LINE WHY "2" IS NOT PRINTED IN OUTPUT.
//        }



//       int i=0;
//        do{
//            System.out.println(i);
//            System.out.println("Java is Great.");
//            if (i==2){
//                System.out.println("Ending the Loop.");
//                break;
//            }
//            i  ;
//        } while (i<5);



//        for (int i=0; i<50; i  ){
//            if (i==2){
//                System.out.println("Ending the Loop");
//                continue;
//            }
//            System.out.println(i);    
//            System.out.println("Java is Great.");
//        }


        int i=0;
        do{
            i  ;
            if(i==2){
                System.out.println("Ending the loop.");
                continue;
            }
            System.out.println(i);
            System.out.println("Java is Great.");
        }while(i<5);
        //DOUBT:WHY 5 IS GETTING PRINTED IN THIS EVEN IF THE CONDITION IS (i<5).

Basically in all these codes my doubt is how can i decide the exact posiiton of certain codes to get the appropriate results. Like when i write i ; above the if statement and after the if statement then different results gets printed.

CodePudding user response：

I understand what are you trying to ask.

Like when i write i ; above the if statement and after the if statement then different results gets printed

This is because when you add i after the if statement.

First time if will be skipped because i = 0, then comes i , second time it will be skipped as well because i = 1, then comes i again. Now i = 2 and you enter if statement. In if statement you have continue which means "skip rest of the loop and start next cycle". In next cycles i will be 2 forever because you are not reaching part of the code that increments it. So either add i in if statement, before continue or keep i at start as you have in example.

EDIT: If you wanna 4 to be last number printed then use while() loop instead of do-while() because in do-while() you always increment first and evaluate later.

CodePudding user response：

I am afraid the code is correct.

do{
    i  ;
    if(i==2){
        System.out.println("Ending the loop.");
        continue;
    }
    System.out.println(i); 
    System.out.println("Java is Great.");
}while(i<5);

As far as this code is concerned, when 4<5 condition is true code executes the do block and increments the variable i and then prints it, thus the value 5.

I suggest you use the while condition and read about it.