If Else clause in java- Program 2 -

// If else in Java code
import java.util.Scanner;
class IfElse 
{
public static void main(String[] args) 
{
int marksObtained, passingMarks; passingMarks = 40;
Scanner input = new Scanner(System.in); System.out.println("Input marks scored by you"); marksObtained = input.nextInt();
if (marksObtained >= passingMarks)
{ 
System.out.println("You passed the exam.");
}
else 
{
System.out.println("Unfortunately you failed to pass the exam.");
}
}
}

Step-by-Step Explanation:

1. Import Scanner class:

import java.util.Scanner;

This class imports the Scanner from the java.util package, which helps read the input of the user.

2. Class Declaration:

class IfElse {

The class IfElse is declared here. This class holds the logic to determine whether a student has passed or failed based on their marks.

3. Main Method Declaration:

public static void main(String[] args) {

The main method is the entry point of the Java program, where the program execution starts.

4. Declaring and Initializing Variables:

int marksObtained, passingMarks;

passingMarks = 40;

The marksObtained variable is declared to store the marks scored by the student.
The passingMarks variable is set to 40, representing the minimum marks required to pass the exam.

5. Creating a Scanner Object:

Scanner input = new Scanner(System.in);

A Scanner object is created named input to scan for user input in the console.

6. Asking for Input from the User:

System.out.println(“Input marks scored by you”);

This statement prints the message “Input marks scored by you” and asks the user for inputting marks.

7. User Input Scan

marksObtained = input.nextInt();

The program reads the integer input given by the user (the marks scored by the student) and stores it in the marksObtained variable.

8. If-Else Conditional Check:

if (marksObtained >= passingMarks) {

System.out.println(“You passed the exam.”);

} else {

System.out.println(“Unfortunately you failed to pass the exam.”);

}

The program checks if the marks scored by the student are greater than or equal to the passing marks (40).
If marksObtained >= passingMarks evaluates to true, the program prints “You passed the exam”.
If marksObtained < passingMarks is false, the program prints “Unfortunately you failed to pass the exam”.

Example Execution:

# Example 1: Student Passed the Exam

Input:

Input marks scored by you

In this example, the student has input 50 as his marks, which is greater than or equal to the passing marks (40).

Since marksObtained >= passingMarks is true, the program will print:

# Example 2: Student Failed the Exam

Input:

Input marks scored by you

Here, the student had inputted 30 as marks, which is less than the passing marks 40.

Since marksObtained >= passingMarks is false, the program will print:

Output:

Unfortunately you failed to pass the exam.

Summary of Output:

1. For input 50 (marks obtained):

You passed the exam.

2. For input 30 (marks obtained):

Unfortunately, you failed to pass the exam.

Conclusion:

The program checks if the student has passed or failed the exam based on their inputted marks.
If the students’ marks are greater than or equal to the passing marks (40), it prints “You passed the exam.”
If the marks of the student are less than passing marks, then it prints “Unfortunately you failed to pass the exam.”