Java Practical No.20.pdf

➢ Define a package named myInstitute include class named as department with one method to display the staff of that department. Develop a program to import this package in a java application and call the method defined in the package.

package myInstitute; public class department { public void display() { System.out.print("Name of Staff is \n 1. Rajesh \n 2. Ram \n 3. Ramesha \n 4. Rahul "); } } import myInstitute.*; class mydep { public static void main(String args[]) { department d=new department(); d.display(); } }

➢ Develop a program which consist of the package named let_me_calculate with a class named calculator and a method named add to add two integer number. Import let_me_calculate package in another program (class named Demo) to add two numbers.

package let_me_calculate; public class calculator { int x,y,z; public void add(int a,int b) { x=a; y=b; z=x+y; System.out.print("Addition of "+x+" and "+y+" : "+z); } }

import let_me_calculate.*; class demo { public static void main(String args[]) { calculator c=new calculator(); c.add(10,20); } }