Add java object oriented proble solution

java/object-oriented-programming/java-inheritance-i/java-inheritance-i.java

@@ -0,0 +1,36 @@
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.math.*;
+import java.util.regex.*;
+
+class Animal{
+	void walk()
+	{
+		System.out.println("I am walking");
+	}
+}
+class Bird extends Animal
+{
+	void fly()
+	{
+		System.out.println("I am flying");
+	}
+
+    void sing()
+    {
+        System.out.println("I am singing");
+    }
+}
+
+public class Solution{
+
+   public static void main(String args[]){
+
+	  Bird bird = new Bird();
+	  bird.walk();
+	  bird.fly();
+      bird.sing();
+
+   }
+}

java/object-oriented-programming/java-inheritance-ii/java-inheritance-ii.java

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+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.math.*;
+import java.util.regex.*;
+
+//Write your code here
+class Arithmetic {
+    public int add(int num1, int num2) {
+        return num1 + num2;
+    }
+}
+
+class Adder extends Arithmetic {
+
+}
+
+public class Solution{
+    public static void main(String []args){
+        // Create a new Adder object
+        Adder a = new Adder();
+
+        // Print the name of the superclass on a new line
+        System.out.println("My superclass is: " + a.getClass().getSuperclass().getName());	
+
+        // Print the result of 3 calls to Adder's `add(int,int)` method as 3 space-separated integers:
+        System.out.print(a.add(10,32) + " " + a.add(10,3) + " " + a.add(10,10) + "\n");
+     }
+}