Explain testing objects for equality in java, JAVA Programming

Assignment Help:

Explain Testing Objects for Equality in java?

<, >, <= and >= can only be used with numbers and characters. They cannot be used with Strings, booleans, arrays or other compound types since there's no well-defined notion of order for these objects. Is true greater than false? Is "My only regret is that I have but one life to give for my country" greater than "I have a dream"?

Equality is a little easier to test however. true is equal to true and true is not equal to false. Similarly "My only regret is that I have but one life to give for my country" is not equal to "I have a dream." However you might be surprised if you ran this program:
class JackAndJill {

public static void main(String args[]) {

String s1 = new String("Jack went up the hill.");
String s2 = new String("Jack went up the hill.");

if ( s1 == s2 ) {
System.out.println("The strings are the same.");
}

else if ( s1 != s2 ) {
System.out.println("The strings are not the same.");
}
}
}
The result is
The strings are not the same.


Related Discussions:- Explain testing objects for equality in java

Uses of fileinputstream and fileoutputstream, Java Programming 1. Write...

Java Programming 1. Write a program in Java to find the highest of any five numbers. How do you compile and execute this Java program? 2. Write a program to explain the Exce

How polylines draws in java language, How Polylines draws in java language?...

How Polylines draws in java language? Java automatically closes the polygons it draws. That is it draws polygons which look like the one on the right rather than the one on the

Change encrypted hsql database into csv format, Change encrypted HSQL datab...

Change encrypted HSQL database into CSV format Project Description: We have an encrypted HSQL Database which we have to convert into csv format. HSQL DB . We have java app

Calculates whether a plane successfully lands or not, Write a program calle...

Write a program called LandThePlane that calculates whether a plane successfully lands or not.   The program begins by prompting (asking) the user for the following details, in th

Query example in sparql - java and jena api, Exercise 1) Lets start by quer...

Exercise 1) Lets start by query example in SPARQL: QUERY: What are the school's names that belong to the "local authority district" 00AA? NOTE 1: "Authority districts" divide UK i

Board Coloring, BoardColoring.java program for 2D MXM matrix

BoardColoring.java program for 2D MXM matrix

Complete the implementation of the class, The class TurtleQTwo extends Turt...

The class TurtleQTwo extends Turtle by adding one new method, plus, which is specified below. (All other features of TurtleQTwo are the same as for Turtle.) method plus(n in

Want to design an all database for a small business, Want to Design an all ...

Want to Design an all encompassing Database for a small business Project Description: I want to organize and structure an all encompassing database and Information management

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd