Switch Statement

Source: TestSwitch.java


import java.util.Scanner;

public class TestSwitch {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.println("Enter month number");

int monthNumber = scan.nextInt();

switch (monthNumber) {

case 1: System.out.println("JAN");

break;

case 2 : System.out.println("FEB");

break;

case 3 : System.out.println("MAR");

break;

case 4 : System.out.println("APR");

break;

default :

System.out.println("Invalid Month");

}

}

}

User Interaction (Getting Users' Input)

Source: TestUserInput.java

import java.util.Scanner;

public class TestUserInput {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.println("Enter your Name : ");

String name = scan.next();

System.out.println("Enter your marks : ");

int marks = scan.nextInt();

if (marks > 90) {

System.out.println("Hi " + name + " You got A");

} else if (marks > 70) {

System.out.println("Hi " + name + " You got B");

} else if (marks > 50) {

System.out.println("Hi " + name + " You got C");

} else {

System.out.println("Sorry Dude better luck next time");

}

}

}

Mechanism of Method Execution

When we run TestApp5 application, the JVM start the execution by calling main() method of TestApp5.

Command: 

java TestApp5

Execution Model: