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

Need software to print bills on a4 pape, Need software to print bills on A4...

Need software to print bills on A4 paper in the format provided. The details are shown below - 1. Serially generated Invoice Number. 2. Appropriate fields in the invoice have

Solve neural network questions, Solve Neural Network Questions Project D...

Solve Neural Network Questions Project Description: You must know  Binary Chop and Kohonen Network, Backpropagation Algorithm. Implementation is required. Can using existi

Explain what is fontmetrics in java, Explain what is FontMetrics in Java? ...

Explain what is FontMetrics in Java? No word wrapping is completed when you draw a string in an applet, even if you embed newlines in the string along with \n. If you expect th

Student, short Java application that stores words in an Array or ArrayList....

short Java application that stores words in an Array or ArrayList.

What are the difference between throw and throws, What are the difference b...

What are the difference between throw and throws? Differences are between throws and throw are: Throw is employed to trigger an exception while throws is used in declara

Explain java.lang.string library in java, Explain java.lang.string library ...

Explain java.lang.string library in java? Strings are objects. Specifically they're instances of the class java.lang.String . This class has several methods which are useful f

Prepare an android keyboard, Prepare an android keyboard Project Descrip...

Prepare an android keyboard Project Description: I want to prepare an android keyboard that have many features.( i will describe later) I want the full app and a trial ver

What is an abstract class, What is an abstract class? Abstract class mu...

What is an abstract class? Abstract class must be extended/subclassed (to be useful). It serves as a template. A class that is abstract may not be instantiated (ie. you may not

Develop a custom android app, Develop a Custom Android App Project Descr...

Develop a Custom Android App Project Description: We want you to construct a custom Android app. Once user downloads the app and upon installation the user gets push notif

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