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

Socket in java networking and rmi, What Is a Socket in Java Networking and ...

What Is a Socket in Java Networking and RMI? Ans) A socket is one end-point of a two-way communication link among two programs running on the network. A socket is bound to a por

File handling operation, Write a program called Drivers that displays infor...

Write a program called Drivers that displays information about Formula 1 drivers and their teams.     The program starts by prompting (asking) the user for the name of an input tex

Object and Instance, What is the difference between instance and object of ...

What is the difference between instance and object of a class? Few says both are same, then why java kept both the words for same thing?

Problem, #questionSmugglers are becoming very smart day by day. Now they ha...

#questionSmugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they

Write a program using local variable, Write a program using local variable ...

Write a program using local variable Public void someMethod( ) { int x; //local variable System.out.println(x); // compile time error } - Constructor - Doesn't

Describe exception classes, Java Programming 1. Discuss any five buzz w...

Java Programming 1. Discuss any five buzz words in Java. 2. Describe exception classes and also explain common exceptions in java. 3. Describe primitive and abstract data

Write the hashcode() method of java.lang.object, Write the hashCode() metho...

Write the hashCode() method of java.lang.Object Anytime you override equals() you should also override hashCode(). The hashCode() method should ideally return the similar int f

Java, 1. Which of the following are not valid Java identifiers, and why? (...

1. Which of the following are not valid Java identifiers, and why? (a) wolVes (b) United(there is only one) (c) 87 (d) 5 3 (e) Real ale (f) isFound?by 2. A class Television

Bilbo board , Design and simulate the bilbo board which should include thre...

Design and simulate the bilbo board which should include three configurable bilbos and some application logic to verify tester operation. the system will be designed using proteus

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