Program/Source Code:

The source code to check if all the bits of a given integer number are HIGH or not is given below. The given program is compiled and executed successfully.

// Java program to check if all the bits of a 
// given integer number are HIGH or not

import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner SC = new Scanner(System.in);

    int num = 0;
    int temp = 0;

    System.out.printf("Enter number: ");
    num = SC.nextInt();

    while (num > 0) {
      temp = num & 1;
      if (temp == 0) {
        System.out.printf("All bits are not set.");
        return;
      }
      num = num >> 1;
    }
    System.out.printf("All bits are set in its binary representation.");
  }
}

Output:

Enter number: 7
All bits are set in its binary representation.

Explanation:

In the above program, we imported the "java.util.Scanner" package to read the variable's value from the user. And, created a public class Main. It contains a static method main().