java classes practice code added

src/OOPS/CLASSES.java

@@ -0,0 +1,52 @@
+
+
+// Java - Class
+class Pen{
+    String color;
+    String type;
+
+    public void write(){
+        System.out.println("Write Something.");
+    }
+
+    public void printColor(){
+        System.out.println(this.color);
+    }
+
+    public void printType(){
+        System.out.println(this.type);
+    }
+}
+
+class Student{
+    String name;
+    int age;
+
+    public void printInfo(){
+        System.out.println(this.name);
+        System.out.println(this.age);
+    }
+}
+
+
+public class CLASSES{
+    public static void main(String args[]){
+        Pen pen1 = new Pen();
+        pen1.color = "blue";
+        pen1.type = "gel";
+        pen1.write();
+
+        Pen pen2 = new Pen();
+        pen2.color = "black";
+        pen2.type = "ballpoint";
+
+        pen1.printColor();
+        pen2.printColor();
+
+
+        Student s1 = new Student();
+        s1.name = "Yasin";
+        s1.age = 20;
+        s1.printInfo();
+    }
+}