Java Practice Programs for Beginners

Simple Java Programs/Fruitshop.java

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+class Fruits {
+   public void VariousFruits() {
+       System.out.println("The various fruits are: ");
+   }
+}
+class Apple extends Fruits {
+    public void VariousFruits() {
+        System.out.println("Apple is a sweet fruit!");
+    }
+}
+class Mango extends Fruits {
+    public void VariousFruits() {
+        System.out.println("Mango is my favourite fruit!");
+    }
+}
+class Banana extends Fruits {
+    public void VariousFruits() {
+        System.out.println("I don't like bananas!");
+    }
+}
+class Fruitshop {
+    public static void main(String[] args) {
+        Fruits myapple = new Fruits();
+        Fruits mymango = new Fruits();
+        Fruits mybanana = new Fruits();
+        myapple.VariousFruits();
+        mymango.VariousFruits();
+        mybanana.VariousFruits();
+
+    }
+}

Simple Java Programs/Green.java

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+abstract class VegetableShop {
+   public abstract void Thanks();
+   public void Onion() {
+        System.out.println("The cost of 1 kg of onion is Rs. 30");
+    }
+   public void Chilli() {
+       System.out.println("The cost of 1 kg of chilli is Rs. 60");
+   }
+   public void Tomato() {
+       System.out.println("The cost of 1 kg of tomato is Rs. 55");
+   }
+   public void Brinjal() {
+       System.out.println("The cost of 1 kg of brinjal is Rs. 50");
+   }
+   public void Ladyfinger() {
+       System.out.println("The cost of 1 kg of Ladyfinger is Rs. 40");
+   }
+   public void Shoppee() {
+    System.out.println("How many Kgs do you need?");
+    System.out.println("The cost of 2 kgs of brinjal is Rs. 100");
+   }
+}
+class Run extends VegetableShop {
+    public void Thanks() {
+        System.out.println("Thank you for shopping with us! Please come back!");
+    }
+}
+class Green {
+    public static void main(String[] args) {
+        Run myobj = new Run();
+        myobj.Onion();
+        myobj.Chilli();
+        myobj.Tomato();
+        myobj.Brinjal();
+        myobj.Ladyfinger();
+        myobj.Shoppee();
+        myobj.Thanks();    
+    }  
+}

Simple Java Programs/area.java

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+public class area {
+    public static void main(String args[]) {
+        int r = 6;
+        double a, c;
+        a = 3.14 * r * r;
+        c = 2 * 3.14 * r;
+        System.out.println("The area of the circle is" + " "+ a);
+        System.out.println("The circumference of the circle is" + " "+ c);
+    }
+}

Simple Java Programs/perfect.java

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+ import javax.swing.JOptionPane;
+ class perfect {
+    public static void main(String[] args) {
+        int i=1, n;
+        String s1 = JOptionPane.showInputDialog(null, "Enter your number");
+        n = Integer.parseInt(s1);
+        while(i<=n){
+            if(n % i == 0) {
+                System.out.println(i);
+                i++;
+            }
+            }
+        }
+    }
+
+/*
+ import javax.swing.JoptionPane;
+ class solution{
+    public static void main(String args[]){
+        String s = JoptionPane.showInputDialog(null, "Enter your number");
+        n = Integer.parseInt(s);
+        for(i=1; i<=n; i++) {
+            System.out.println(i);
+        }
+    }
+ }
+ */

Simple Java Programs/solution.java

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+import javax.swing.JOptionPane;
+ class solution{
+    public static void main(String args[]){
+        String s = JOptionPane.showInputDialog(null, "Enter your number");
+        int n = Integer.parseInt(s);
+        for(int i=1; i<=n; i++) {
+            if (n % i == 0){
+                System.out.println(i);
+            }
+        }
+    }
+ }