Question

1. Give a Java Statement that will display a dialogue window with the following message.

“Java looks good”                                                                                                        

2. Write a code in java – create a method “s”. Insert 10 floating-point numbers in it. Using iterator find the sum of those numbers.       

3. Write a Java program to read integers (for ex: 2017). Display it one digit per line in reverse order.

7

1

0

2

1. Write a Program that inputs a double value. If the double value is greater than 150.45 or between 60.30 and 70.25 (inclusive), then output YES. Otherwise output NO.

  

Answer 1

1).

import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class DialogueBox {
   JFrame f;
   DialogueBox(){
   f=new JFrame();
   JOptionPane.showMessageDialog(f,"Java looks good!");
   }
   public static void main(String[] args) {
   new DialogueBox();
   }
}

output:

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2).

Code:

====

import java.util.ArrayList;
import java.util.Iterator;

public class FloatingIterator {
   public static void main(String[] args) {
       ArrayList<Double> al = new ArrayList<Double>();
       al.add(1.12);
       al.add(2.12);
       al.add(3.12);
       al.add(4.12);
       al.add(5.12);
       al.add(6.12);
       al.add(7.12);
       al.add(8.12);
       al.add(9.12);
       al.add(10.12);
       s(al);
   }
  
   public static void s(ArrayList<Double> al) {
       Iterator<Double> it = al.iterator();
       while(it.hasNext()) {
           System.out.println(it.next());
       }
   }
}

output:

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3).

import java.util.Scanner;

public class ReverseDigits {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       System.out.print("Enter a number: ");
       int input = sc.nextInt();
      
       while(input%10!=input) {
           System.out.println(input%10);
           input = input/10;
       }
       System.out.println(input);
      
       sc.close();
   }
}

output:

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4).

import java.util.Scanner;

public class FloatBetween {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       System.out.print("Enter a number: ");
       double input = sc.nextDouble();
       if(input>150.45 || (input>=60.30 && input<=70.25)) {
           System.out.println("YES");
       }
       else {
           System.out.println("NO");
       }
       sc.close();
   }
}

output:

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