Question

How to define and use a simple class with fields, constructor and method in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {

        private String name;
	    private String address;
 
	public JavaApplication1(String _name, String _address) {
		name = _name;
		address = _address;
	}
 
	public void setName(String name) {
		this.name = name;
	}
 
	public void setAddress(String address) {
		this.address = address;
	}
 
	public void showDetails() {
		System.out.println("Hello my name is " + name + " I'm from " + address);
	}
    public static void main(String[] args) {
        JavaApplication1 person = new JavaApplication1("Dan", "LA");
		person.showDetails();
                
        person.setName("Ron");
        person.showDetails();
    }
}

/*
run:

Hello my name is Dan I'm from LA
Hello my name is Ron I'm from LA

*/

 

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Answer 2

package javaapplication1;

public class JavaApplication1 {

        private String name;
	    private String address;
 
	public JavaApplication1(String _name, String _address) {
		name = _name;
		address = _address;
	}
 
	public void setName(String name) {
		this.name = name;
	}
 
	public void setAddress(String address) {
		this.address = address;
	}
 
	public void showDetails() {
		System.out.println("Hello my name is " + name + " I'm from " + address);
	}
    public static void main(String[] args) {
        JavaApplication1 person1 = new JavaApplication1("Dan", "LA");
		person1.showDetails();
                
        JavaApplication1 person2 = new JavaApplication1("Ron", "CA");
        person2.showDetails();
    }
}

/*
run:

Hello my name is Dan I'm from LA
Hello my name is Ron I'm from CA

*/

 

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