Question

1- Create a Java program to determine a certain number whether that number is odd or even.

Hint : use arithmetic operators and expressions to find the odd or even numbers.

2- Create a Java program to ask a user to enter a name and password as shown below:

name is “Ahmed” and his password is 2321 or name is “Ali” and his password is 6776 . The program shows a greeting “Hi ..Welcome to my program” if the user is “Ahmed” Or “Ali” otherwise it will shows a message “Sorry!! I don’t recognize you”.

Hint : use conditional and Boolean Operators.

3- Create a Java problem to ask a user to enter a GPA grade and based on that grade it will determine if the user is one of the Honor list or not.

Hint :   

- GPA is more than or equal 3.90 shows message “Excellent .. you are at First honor”

- GPA is more than or equal 3.70 shows message “Excellent .. you are at Second honor ”

- GPA is More than or equal 3.50 shows message “Excellent .. you are at Third honor” GPA is less than 3.50 and more than or equal 2.00 shows message “Good .. Work hard to raise your GPA”

- Otherwise shows message “WORK HARD … You are in trouble”

Answer 1

• 1).
• Code:-

import java.util.Scanner;
class Even_Odd{
public static void main(String[] args){
int num;
Scanner in = new Scanner(System.in);
System.out.print("Enter a number to check: ");
num = in.nextInt();
if(num % 2 == 0){
System.out.println("Even");
} else {
System.out.println("Odd");
}
}
}

• Output:-

• 2).
• Code:-

import java.util.Scanner;
class User{
public static void main(String[] args){
int password;
String username;

Scanner in = new Scanner(System.in);
//get username from user
System.out.print("Enter your username: ");
username = in.next();
//get password from user
System.out.print("Enter your password: ");
password = in.nextInt();
//if username is Ahmed and password is 2321
if(username.equals("Ahmed") && password==2321){
System.out.println("Hi ..Welcome to my program");
}
//if username is Ali and password is 6776
else if(username.equals("Ali") && password==6776){
System.out.println("Hi ..Welcome to my program");
} //if username and password are not recognized
else {
System.out.println("Sorry!! I don’t recognize you");
}
in.close();
}
}

• Output:-

• 3).
• Code:-

import java.util.Scanner;
class Gpa {
public static void main(String[] args){
float gpa;
Scanner in = new Scanner(System.in);

System.out.print("Enter gpa: ");
gpa = in.nextFloat();
// Gpa > 3.90
if(gpa >= 3.90){
System.out.println("Excellent .. you are at First honor");
} // Gpa > 3.70
else if(gpa >= 3.70){
System.out.println("Excellent .. you are at Second honor");
} // Gpa > 3.5
else if(gpa >= 3.50){
System.out.println("Excellent .. you are at Third honor");
} //Gpa < 3.50 and > 2.00
else if(gpa < 3.50 && gpa >= 2.00){
System.out.println("Good .. Work hard to raise your GPA");
} // Otherwise
else {
System.out.println("WORK HARD … You are in trouble");
}
in.close();
}
}

• Output:-

Thank You...!