Integer intObj1 = new Integer(10);
Above we have created an object called "intObj1" and it has a memory location. And also we have assigned value 10 to it,The “==” operator
Used to compare two Objects. Comparing means checking to see if the two objects are referring to the same memory location.
Example :
String str1 = new String("techoverloads");
// now str2 and str1 reference the same place in memory
String str2 = str1;
if(str1== str2)
System.out.printlln("str1==str2is TRUE");
else
System.out.println("str1==str2is FALSE");
Result isstr1==str2 is TRUE
The equals() method
Used to compare contents of two objects.Checks only the values, not their locations in memory.
Example:
String obj1 = new String("xyz");
String obj2 = new String("xyz");
if(obj1.equals(obj2))
System.out.printlln("obj1==obj2 is TRUE");
else
System.out.println("obj1==obj2 is FALSE");
Result is
obj1==obj2 is TRUE
The "equals()" method is defined in the object class and it's default behavior is as same as the "==" operator. But it is overridden in-order to compare only the contents of the object instead of the location. Java string class overrides the default implementation of "equals()" method and above is an example of that.
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