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Computer Applications

State the difference between == operator and equals() method.

Java String Handling

ICSE 2016

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Answer

equals()==
It is a methodIt is a relational operator
It is used to check if the contents of two strings are same or notIt is used to check if two variables refer to the same object in memory
Example:
String s1 = new String("hello");
String s2 = new String("hello");
boolean res = s1.equals(s2);
System.out.println(res);

The output of this code snippet is true as contents of s1 and s2 are the same.		Example:
String s1 = new String("hello");
String s2 = new String("hello");
boolean res = s1 == s2;
System.out.println(res);

The output of this code snippet is false as s1 and s2 point to different String objects.

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