Software Engineering

4. While Loops public class App { public static void main(String[] args) { int process =0;                                               //process starts at 0 while(process<=10){                    //process validation (whlie statement) System.out.println("ID: "+ value);  //Output process as ID process= process+1;                     // process increase by 1 } } } Output: ID: 0  ID: 1  ID: 2  ID: 3  ID: 4  ID: 5  ID: 6  ID: 7  ID: 8 ID: 9  ID: 10

3. Scanner import java.util.Scanner; public class App{ public static void main(String[] args) { //create scanner object Scanner input = new Scanner(System.in); //output the prompt System.out.println("Enter a number: "); //wait for the user to enter a number int num = input.nextInt();         //output System.out.println("you entered: "+num); } } Output : User Input Note:1. For: String line = input.nextLine(); and  Double value = input.nextDouble(); And 2. Always save java program as (In this case: App.java) class name.java.

2.  Integer public class App{ public static void main(String[] args) { int randomNum; randomNum=211; System.out.println(randomNum); } } Output: 211

1. First program Install java and Eclipse Then follow the Steps: File-New-Java Project- Enter Project Name- Finish Go to Project Name you Entered -File-New Class- Application public class Application {                                        //Class name same as java file name public static void main(String[] args) {           //Main method String text ="Hello World !";                 //String data type System.out.println(text);                        //print method } } OUTPUT:  Hello World !