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 are the two important tcp socket classes, Socket and ServerSocket. Ser...

Socket and ServerSocket. ServerSocket is used for normal two-way socket communication. Socket class permits us to read and write by the sockets. getInputStream() and getOutputStrea

Object oriented programming, Theobjectiveoftheassignment is tofamiliarize y...

Theobjectiveoftheassignment is tofamiliarize youwithinheritance, GUIand abstraction. Create anabstractclass named that includesprivatefields for the InternationalStandard BookNumbe

Describe about applet security, Describe about Applet Security? The pos...

Describe about Applet Security? The possibility of surfing the Net, wandering across a random page, playing an applet and catching a virus is a fear in which has scared several

Program with eclipse and enumeration , Problem Definition A new Met Of...

Problem Definition A new Met Office web application will allow users of their web site to view rainfall statistics for months and years in the UK. The application allows the m

Boardcolourling, write a program to find the minimum no of colors to fill a...

write a program to find the minimum no of colors to fill a board where some of the elements of different color are already placed.

Why we avoiding short circuits, Why we Avoiding Short Circuits ? If you...

Why we Avoiding Short Circuits ? If you need all of your boolean expressions evaluated regardless of the truth value of each, then you can use & and | instead of && and ||. The

Minimumshelf, Write a program that finds the minimum total number of shelve...

Write a program that finds the minimum total number of shelves, including the initial one required for this loading process

Is java is network oriented or not, Distributed / Network Oriented Java...

Distributed / Network Oriented Java is network friendly -- both in its portable, threaded nature, and since common networking operations are built-in to the Java libraries.

Difference hashcode and equal, The hashCode() and equals() methods have...

The hashCode() and equals() methods have to be very important, when objects implementing these two functions are added to collections. If not implemented or implemented incorre

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