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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.
Explain The Applet in java? The reason people are excited about Java as more than just another OOP language is because it allows them to write interactive applets on the web.
You should override the hashCode() and equals() functions from the Object class. The default implementation of the hashcode() and equals(), which are inherited from the java.
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