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Java Helloworld

18:35 suresh chaudhari 0 Comments

Calcuator Demo
package com.oop;
class Calculator
{
     public Calculator() {
          System.out.println("I am constructor");
         
     }
     //1.add 2.sub 3.multiplication 4.division
     public int add(int num1,int num2)
     {
         
          return (num1+num2);
     }
}
public class CalculatorDemo {

     public static void main(String[] args)
     {
          Calculator calcObj=new Calculator();
          System.out.println("addition is "+calcObj.add(2, 3));
         
     }
}

Example
package com.oop;
class Human
{
     private String address;
    private int age;
     public int getAge() {
          return age;
     }

     public void setAge(int age) {
          this.age = age;
     }

     public String getAddress() {
          return address;
     }
  
     public void setAddress(String address) {
          this.address = address;
     }
    
}
public class HelloWorld {
     //Type2:declaration and oneliner init
     //datatype varname="value"
static String empName="Ashwin More";


//Type1: declaration and then intialization
//dataType variable Name;
//variableName="value";

//creation of objects
//ClassName objectName=new className();


public static void main(String[] args) {
     System.out.println("HI Java Batch and i am "+empName);
    
     Human objectHuman=new Human();
     objectHuman.setAddress("Pune");
     objectHuman.setAge(23);
    
     Human objectHuman1=new Human();
     objectHuman1.setAddress("Pune");
     objectHuman1.setAge(20);
    
     System.out.println(""+objectHuman1.getAddress());
}   
    
}
//visibily modifier class ClassName

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