Example:

class ShikshaSanchar {
    public static void main(String[] args) {
        int i = 1;
        do {
            System.out.println("Hello from Shiksha Sanchar  " + i);
            i++;
        } while (i <= 5);
    }
}

Explanation:

1. Initialization:

   int i = 1;

   variable i is initialized to 1.
2. do Block Execution: The code inside the do block runs before checking the condition.
3. Printing & Incrementing:
   • First, it prints: "Hello from Shiksha Sanchar 1".
   • Then i++ increases i to 2.
4. Condition Check:

   while (i <= 5)

   — As long as this is true, it keeps repeating the loop.
5. Loop Runs 5 Times: Runs with i = 1 to i = 5. When i becomes 6, the condition i <= 5 becomes false, so the loop stops.

Flowchart : do-while Loop in Java

This diagram visually shows how a do-while loop works — where the loop body is executed at least once, and condition is checked afterward.

1. Start
   • The program execution begins here.
   • Control moves to the initialization step.
2. Initialization: i = 1
   • Variable i is initialized with value 1.
   • This step happens only once, before the loop starts.
3. Loop Body: Print Statement
   • Statement inside the loop:

     System.out.println("Hello from Shiksha Sanchar " + i);

   • This line prints the current value of i with the message.
   • This part is always executed at least once, even if the condition is false.
4. Update Step: i = i + 1
   • After printing, the value of i is incremented by 1.
   • Prepares i for the next iteration.
5. Condition Check: Is i <= 5?
   • After updating i, the loop checks if the condition is still true.
   • If YES: The loop goes back to step 3 (print).
   • If NO: The loop terminates and control moves to the end.
6. End
   • The condition is false.
   • The loop exits, and the program ends.

Use Case:

When you want to ensure at least one execution, such as displaying a menu to the user and asking for input, regardless of the condition.

Summary: