Friday, 26 February 2016

Java Tutorial : Java String(What is an immutable object)


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Java Tutorial : Java String(What is an immutable object) 
Person.java
/*
 * Person is an immutable class. Person's 
 * state cannot be changed once it is created.
 * 
 * We can't subclass the final class and 
 * alter the behavior.
 */
public final class Person
{

    final String name;

    public Person(String name)
    {
        this.name = name;
    }

    public String getName()
    {
        return name;
    }

}
ImmutableTest.java
public class ImmutableTest
{

    public static void main(String[] args)
    {

        Person personObj = new Person("Peter");
        System.out.println(personObj.name);
        System.out.println(personObj.getName());

        //personObj.name = "Dave";

    }

}
Output
Peter
Peter
Click the below link to download the code:
https://sites.google.com/site/javaee4321/java/StringDemo_Immutable_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/StringDemo_Immutable_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/ec3cefb1e3f2c8e99780d56182501ac13735f589/BasicJava/StringDemo_Immutable_App/?at=master

See also:

  • All JavaEE Viedos Playlist
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  • Servlets Tutorial
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  • JDBC Tutorial
  • Java Collection Framework Tutorial
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