Java Proficiency: java vector examples

Showing posts with label java vector examples. Show all posts

Monday, 25 May 2015

How to replace element of vector

We can replace any specific index element by other element using set(int index,element) method.

import java.util.Vector;

public class ReplaceElement {

public static void main(String[] args) {

        Vector<String> vector = new Vector<String>();
        //add element in vector
        vector.add("cricket");
        vector.add("hockey");
        vector.add("football");
        vector.add("tennish");

        // print vector
        System.out.println("Before replace Vector is = "+vector);

        /*
        * Replaces the element at the specified
        * position in this Vector with the
        * specified element.
        */
        vector.set(1,"Apple");

        System.out.println("After Replace element vector is = "+vector);

    }

}

Output:

Before replace Vector is = [cricket, hockey, football, tennish]

After Replace element vector is = [cricket, Apple, football, tennish]

Thursday, 21 May 2015

How to storing Java Object In Vector

import java.util.Vector;

public class VectorOfObject {

    public static void main(String[] args) {

        Vector<User> vector = new Vector<User>();
        vector.add(new User("shivam",100));
        vector.add(new User("raja",200));
        vector.add(new User("mukesh",300));
        vector.add(new User("piyush",500));

        // print vector
        for (User user : vector) {
            System.out.println("user name="+user.getName()+" User id="+user.getUserId());
        }

    }


}

class User{

    private String name;
    private int userId;

    public User(String name, int userId) {
        super();
        this.name = name;
        this.userId = userId;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getUserId() {
        return userId;
    }
    public void setUserId(int userId) {
        this.userId = userId;
    }

}

Output:

user name=shivam User id=100

user name=raja User id=200

user name=mukesh User id=300

user name=piyush User id=500