Pratice2.java

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
// public class Pratice2{
//     public static void main(String[] args){
//         Scanner sc=new Scanner(System.in);
//         System.out.print("Enter number 1:");
//         int num1=sc.nextInt();
//         System.out.print("Enter number 2:");
//         int num2=sc.nextInt();
//         System.out.print("sum of number 1 and number 2 is:"+(num1+num2));
//     }
// }
//methods 

import javax.swing.JFrame;

// public class Pratice2 {
//     int logic(int a, int b) {

//         return a + b;
//     }

//     int logic(int a, int b, int c) {

//         return a + b + c;
//     }

//     public static void main(String[] args) {
//         Scanner sc = new Scanner(System.in);
//         Pratice2 obj = new Pratice2();

//         System.out.print("Enter number 1:");
//         int a = sc.nextInt();
//         System.out.print("Enter number 2:");
//         int b = sc.nextInt();
//         System.out.print("Enter number 3:");
//         int c = sc.nextInt();

//         obj.logic(a, b);
//         obj.logic(a, b, c);
//         System.out.println("Sum of 2 numbers are " + obj.logic(a, b));
//         System.out.println("Sum of 2 numbers are " + obj.logic(a, b, c));
//     }
// }

// Custom class
// class Emp{
//     String name;
//     int id;
//     int salary;
// }
// public class Pratice2{
//     public static void main(String[] args){
//     Scanner sc=new Scanner(System.in);
//     Emp Abhi=new Emp();
//     Abhi.name="Abhi";
//     Abhi.id=7;
//     Abhi.salary=800;
//     System.out.println("Creating custom class");
//     System.out.println("Employee Name: "+Abhi.name);
//     System.out.println("Employee ID: "+Abhi.id);
//     System.out.println("Employee Salary: "+Abhi.salary);

//     }
// }

// Use of Getter and setter
// class Emp {
//     private String name;
//     private int id;
//     private int salary;

//     public void setname(String a) {
//         name = a;
//     }

//     public String getname() {
//         return name;
//     }

//     public void setid(int a) {
//         id = a;
//     }

//     public int getid() {
//         return id;
//     }

//     public void setSalary(int a) {
//         salary = a;
//     }

//     public int getsalary() {
//         return salary;
//     }

// }

// public class Pratice2 {
//     public static void main(String[] args) {
//         Scanner sc = new Scanner(System.in);
//         Emp Abhi = new Emp();
//         Abhi.setname("Abhi");;
//         Abhi.setid(8);
//         Abhi.setSalary(800);
//         System.out.println("Creating custom class");
//         System.out.println("Employee Name: " + Abhi.getname());
//         System.out.println("Employee ID: " + Abhi.getid());
//         System.out.println("Employee Salary: " + Abhi.getsalary());

//     }
// }

//Inheritance 

// class Base {
//     int x;

//     public void setx(int a) {
//         x = a;
//     }

//     public int getx() {
//         return x;

//     }
// }
// class Derived extends Base{
//     int y;
//     public void sety(int b){
//         y=b;
//     }
//     public int gety(){
//         return y;
//     }
// }

// public class Pratice2 {
//     public static void main(String[] args){
//         Base b=new Base();
//         b.setx(6);
//         System.out.println(b.getx());
//     }
// }

//// Exception handling

// public class Pratice2 {
//     public static void main(String[] args){
//         Scanner sc=new Scanner(System.in);
//         System.out.print("Enter number 1:");
//         int a=sc.nextInt();
//         System.out.print("Enter number 2:");
//         int b=sc.nextInt();
//         try{
//         int c=a/b;
//         System.out.println("Division of Number 1 and number 2 is:"+c);
//         } catch(Exception e){
//              System.out.println("ERROR reason:"+e);
//         }

//     }
// }

//File handling

//public class Pratice2 {
// public static void main(String[] args) throws IOException {
// File myfile=new File("Abc.txt");
// myfile.createNewFile();

// FileWriter myFileWriter=new FileWriter("abc.txt");
// myFileWriter.write("This is it");
// myFileWriter.close();

// File myFile=new File("abc.txt");
// Scanner sc=new Scanner(myFile);
// while(sc.hasNextLine()){
// String line=sc.nextLine();
// System.out.println(line);
// }
// sc.close();
// if(myFile.delete()){
// System.out.println("File deleted");
// }
// }
//}

//Threads by extending thread class

// class Mythread extends Thread {
//     public void run() {
//         while (true) {
//             System.out.println("This is java thread");
//             System.out.println("I am happy");
//         }
//     }
// }
// class Mythread1 extends Thread {
//     public void run() {
//         while (true) {
//             System.out.println("This is java thread1");
//             System.out.println("I am happy2.0");
//         }
//     }
// }

// public class Pratice2 {
//     public static void main(String[] args) {
//         Mythread obj=new Mythread();
//         obj.run();

//     }
// }

//THraed by implementing interface

// class myThread implements Runnable {
//     public void run() {
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");
//         System.out.println("This is a thread");

//     }
// }

// class myThread1 implements Runnable {
//     public void run() {
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//         System.out.println("This is a thread not a threat");
//     }
// }

// public class Pratice2 {
//     public static void main(String[] args) {
//         myThread t1 = new myThread();
//         Thread t3 = new Thread(t1);

//         myThread1 t2 = new myThread1();
//         Thread t4 = new Thread(t2);
//         t3.start();
//         t4.start();

//     }
// }

//AWT 
// import java.awt.*;
// public class Pratice2{

//     public static void main(String[] args){
//          Frame f=new Frame();
//          f.setVisible(true);
//          f.setSize(400,300);
//          f.setTitle("Aniket");
//     }
// }

//Swing
// import javax.swing.*;
// public class Pratice2 {
//     public static void main(String[] args) {
//         JFrame j=new JFrame();
//         j.setVisible(true);
//         j.setSize(500,300);
//         j.setTitle("Aniket");
//         ImageIcon image=new ImageIcon("a.jpg");
//         j.setIconImage(image.getImage());

//     }
// }