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

What is arpanet and who developed it, What is ARPANET and who developed it?...

What is ARPANET and who developed it? ARPANET stands for Advanced Research Projects. The initial reasons were to communicate along with and share computer resources between mainl

State the java virtual machine and runtime environment, Java Virtual Machin...

Java Virtual Machine & Runtime Environment Basic Concept When you write a program in C++ it's called source code. C++ compiler converts this source code into the machine c

Explain pop, SMTP (Simple Mail Transfer Protocol) permits two mail servers ...

SMTP (Simple Mail Transfer Protocol) permits two mail servers to communicate using a easy language, and gives a step-by-step protocol for exchanging information. SMTP delivers m

Define class diagram , Class diagram technique is vital within Object Orie...

Class diagram technique is vital within Object Oriented functions. Class diagrams illustrate the kinds of objects in the system and the several static relationships among them. Cl

Write a program to explain do while loop in java, Write a program to explai...

Write a program to explain do while loop in Java ? // This is the Hello program in Java class Hello { public static void main (String args[]) { int i = -1; do { if (

Lookupdispatchaction and dispatchaction, What is difference among LookupDis...

What is difference among LookupDispatchAction and DispatchAction? Ans) The difference among LookupDispatchAction and DispatchAction is that the actual method that gets known in

String concatenation and comparison, String concatenation and comparison ...

String concatenation and comparison public class StringTest { public static void main(String[] args) { int i = 4; int j = 5; System.out.println ("Hello" + i); // wi

Program for convert temprature and length, Public class ConversionProgram {...

Public class ConversionProgram {  public void start() {    String userChoice = askConversionCategory();   while (userChoice.equals("1") || userChoice.equals("2") || Page 2

What is alternate text, What is Alternate Text ? The APPLET element ca...

What is Alternate Text ? The APPLET element can have an ALT attribute. An ALT attribute is used through a browser which understands the APPLET tag but for some purpose cannot

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