Main

Abstract.java

@@ -0,0 +1,12 @@
+import myapp.main;
+
+abstract class aminal{
+    void makesound();
+}
+
+public class Abstract {
+    public static void main(String[] args) {
+
+    }
+
+}

BubbleSort.java

@@ -1,8 +1,7 @@
  import java.util.*;
 
  class BubbleSort {
-
-    public static void printArray(int arr[]){
+   public static void printArray(int arr[]){
         for(int i=0; i<arr.length; i++){
             System.out.print(arr[i] + " ");
             System.out.println();

BubbleSort2.java

@@ -0,0 +1,26 @@
+import java.util.*;
+ public Class BubbleSort2 {
+    public static void printArray(int arr[]){
+        for(int i=0; i<arr.length;i++);{
+            System.out.print(arr[i] +"");
+            System.out.println();
+        }
+    }
+
+    public static void main(String args[]){
+            int arr[] = {8,5,6,2,1};
+
+            //bubble sort
+            for(int i=0; i<arr.length-1; i++) {
+                for(int j=0; j<arr.length-i-1; j++) {
+                    if(arr[j]> arr[j+1]) {
+                        //swap
+                        int temp = arr[j];
+                        arr[j] = arr[j+1];
+                        arr[j+1] = temp;
+                    }
+                }
+            }
+            printArray(arr);
+        }
+    }

ClassObject.java

@@ -0,0 +1,21 @@
+class Student{
+String firstname = "anjali";
+int age=19;
+
+
+Student(String s, int a ) {
+    firstname=s;
+    age=a;
+
+    System.out.println(firstname+  " "+ age);
+}
+
+
+}
+
+public class ClassObject{
+    public static void main(String args[]){
+        Student obj = new Student("anjali", 15);
+        Student obj1 = new Student("ayushi", 15);
+    }
+}

Happy.java

@@ -0,0 +1,28 @@
+ abstract class Payment{
+
+    abstract void pay(int a);
+    void succes(){
+        System.out.println("paymemt done");
+    }
+
+}
+
+class UpiPayment extends Payment{
+    void pay(int a){
+        System.out.println("upi via payment"+a);
+    }
+}
+class Netbanking extends Payment{
+    void pay(int b){
+    System.out.println("netbanking via payment"+b);
+}
+}
+class Happy {
+    public static void main(String[]args){
+        Payment obj=new UpiPayment();
+        obj.pay(23000);
+        Payment obj1 =new Netbanking();
+        obj1.pay(56000);
+        obj1.succes();
+    }
+}

Hello.java

@@ -0,0 +1,19 @@
+class Vehicle{
+    void run(){
+        System.out.println("runn karti hai");
+    }
+}
+
+class Bike extends Vehicle{
+    void run(){
+        System.out.println("ye bhi chalti hai");
+    }
+}
+
+public class Hello{
+    public static void main(String[] args){
+        Vehicle obj=new Bike();
+        obj.run();
+    }
+
+}

Inheritance.java

@@ -0,0 +1,32 @@
+public class Inheritance{
+    public static void main(String[] args) {
+        Puppy obj1 = new Puppy();
+        obj1.cry();
+        obj1.bark();
+        obj1.lazy();
+
+    }
+}
+
+
+
+
+class Animal {
+    void cry(){
+        System.out.println("cryingggggggg");
+    }
+}
+
+
+class Dog extends Animal{
+    void bark(){
+        System.out.println("barkkkkkk");
+    }
+}
+
+
+class Puppy extends Dog{
+    void lazy(){
+        System.out.println("cutieeeeeeee");
+    }
+}

Inheritance3.java

@@ -0,0 +1,27 @@
+public class Inheritance3{
+    public static void main(String[] args) {
+        Monitor obj = new Monitor();
+        obj.displayName();
+        obj.displayClass();
+        obj.checkDiscipline();
+
+    }
+}
+
+class Person{
+    void displayName(){
+        System.out.println("anjali");
+    }
+}
+
+class Student extends Person{
+    void displayClass(){
+        System.out.println("i am in class");
+    }
+}
+
+class Monitor extends Student{
+    void checkDiscipline(){
+        System.out.println("discipline");
+    }
+}

Inheritance6.java

@@ -23,9 +23,9 @@ public class Inheritance6 {
     public static void main(String[] args) {
         Puppy myPuppy = new Puppy();
 
-
+        myPuppy.weep(); 
         myPuppy.eat();   
         myPuppy.bark();  
-        myPuppy.weep(); 
+
     }
 }

Main.java

@@ -0,0 +1,31 @@
+
+class Animal {
+    void eat() {
+        System.out.println("This animal eats food.");
+    }
+}
+
+// Derived class (inherits from Animal)
+class Dog extends Animal {
+    void bark() {
+        System.out.println("The dog barks.");
+    }
+}
+
+// Derived class (inherits from Dog)
+class Puppy extends Dog {
+    void weep() {
+        System.out.println("The puppy weeps.");
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        Puppy myPuppy = new Puppy();
+
+
+        myPuppy.eat();   
+        myPuppy.bark();  
+        myPuppy.weep();  
+    }
+}

Object.java

@@ -0,0 +1,19 @@
+class Student {
+    String firstName="anjali";
+    int age=19;
+
+
+    Student(String firstName,int age){
+        this.firstName= firstName;
+        age=age;
+
+        System.out.println(firstName+ " " + age);
+    }
+}
+
+public class Object {
+    public static void main(String[] args) {
+        Student obj = new Student("anjali", 19);
+        Student obj1Student = new Student("ayushi", 15);
+    }
+}

Overloading.java

@@ -0,0 +1,22 @@
+class parent{
+    void sum(int a){
+        System.out.println("my name is anjaliii"+a);
+    }
+
+    void sum(int a,int b){
+        System.out.println(a+b);
+    }
+    void sum(int a, int b, int c){
+        System.out.println(a+b+c);
+    }
+}
+
+
+class Overloading{
+    public static void main(String[] args){
+        parent obj =new parent();
+        obj.sum(420);
+        obj.sum(420,20);
+        obj.sum(420,20,40);
+    }
+}

Overloading2.java

@@ -0,0 +1,11 @@
+class Overloading2{
+    int age=19;
+    void data(){
+        System.out.println(this);
+    }
+
+    public static void main(String[] args){
+        Overloading2 obj=new Overloading2();
+        obj.data();
+    }
+}

Overloading4.java

@@ -0,0 +1,19 @@
+class Area {
+    void area(double radius){
+        System.out.println("Area of circle:" + (Math.PI * radius * radius ));
+    }
+    void area(double length, double width){
+        System.out.println("Area of Rectangle:" + (length* width));
+    }
+
+}
+
+public class Overloading4 {
+    public static void main(String[] args){
+        Area obj = new Area();
+
+        obj.area(10.0);
+        obj.area(3.5, 4);
+
+    }
+}

Problem5.java

@@ -0,0 +1,21 @@
+class Shape {
+    public void area() {
+        System.out.println("displays area");
+    }
+}
+
+class Triangle extends Shape {
+    public void area(int l, int h){
+        System.out.println(1/2*l*h);
+    }
+}
+
+class EquilateralTriangle extends Triangle{
+    public static void main(String[] args) {
+
+    }
+}
+
+
+
+

SelectionSort.java

@@ -9,7 +9,7 @@ public static void printArray(int arr[]){
     public static void main(String args[]){
         int arr[] = {7,8,3,1,2};
 
-        //bubble sort
+        //SelectionSort
         for(int i=0; i<arr.length-1; i++) {
             int smallest = i;
             for(int j=i+1; j<arr.length; j++) {