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

Saaa, Write a program to find the area under the curve y = f(x) between x =...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b.

Design a bond class, In the lectures, we have written programs for bond pri...

In the lectures, we have written programs for bond pricing in discrete time. We have also talked about the theory for bond pricing and yields in continuous time. In this exercise,

Methods, I need the five methods public class Ex1Program { public void...

I need the five methods public class Ex1Program { public void start() { // Step 1. Declare and construct an array of 19 Movie objects (call the array films)

Finding highest and lowest numbers, Hi i need help creating a small program...

Hi i need help creating a small program that basically asks the user how many numbers hes going to use and then ask for those numbers and see which is the biggest and the smaller

What is synchronous messaging, Synchronous messaging involves a client that...

Synchronous messaging involves a client that waits for the server to respond to a message. So if one end is down the whole communication will fail.

Nelson-siegel parametric class of term structures, Since there are only a f...

Since there are only a finite number of bonds available in the market. There will always be "holes" to fill in when defining a yield curve in continuous time. A common approach is

Explain about core java, Java is increasingly used for middleware applicati...

Java is increasingly used for middleware applications to communicate among Server and clients. Java has features like multithreading, portability and networking capabilities. Chang

What is jsp page, A JSP page is a text-based document that having two types...

A JSP page is a text-based document that having two types of text: static template data, which can be expressed in any text-based format like HTML, SVG, WML, and XML, and JSP eleme

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