Association in Java

StudentClass.java

@@ -0,0 +1,36 @@
+class Address
+{
+   int streetNum;
+   String city;
+   String state;
+   String country;
+   Address(int street, String c, String st, String coun)
+   {
+       this.streetNum=street;
+       this.city =c;
+       this.state = st;
+       this.country = coun;
+   }
+}
+class StudentClass
+{
+   int rollNum;
+   String studentName;
+   //Creating HAS-A relationship with Address class
+   Address studentAddr; 
+   StudentClass(int roll, String name, Address addr){
+       this.rollNum=roll;
+       this.studentName=name;
+       this.studentAddr = addr;
+   }
+   public static void main(String args[]){
+       Address ad = new Address(55, "Agra", "UP", "India");
+       StudentClass obj = new StudentClass(101, "Hero", ad);
+       System.out.println(obj.rollNum);
+       System.out.println(obj.studentName);
+       System.out.println(obj.studentAddr.streetNum);
+       System.out.println(obj.studentAddr.city);
+       System.out.println(obj.studentAddr.state);
+       System.out.println(obj.studentAddr.country);
+   }
+}