Java Tutorial: Practice Set (Java Practice Questions)

1. What will be the result of the following expression:
   

   float a = 7/4 * 9/2
2. Write a java program to encrypt a grade by adding 8 to it. Decrypt it to show the correct grade.
3. Use comparison operators to find out whether a given number is greater than the user entered number or not.
4. Write the following expression in a java program:
   

   (v^2-u^2)/2as
5. Find the value of 'a' in expression given below :
   

   int x = 7
   int a = 7*49/7 + 35/7

Code Solution:

package com.company;

public class ps2_pr01 {
    public static void main(String[] args) {
        float a = 7/4.0f * 9/2.0f;
        System.out.println(a);
    }
}

package com.company;

public class ps2_pr02 {
    public static void main(String[] args) {
        char grade = 'B';
        grade = (char)(grade + 8);
        System.out.println(grade);
        // Decrypting the grade
        grade = (char)(grade - 8);
        System.out.println(grade);
    }
}

package com.company;
import java.util.Scanner;

public class ps2_pr_03 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        System.out.println(a>8);
        System.out.println(7*49/7+35/7);
    }
}

Handwritten Notes: Click To Download

Ultimate Java Cheatsheet: Click To Download