== is used to check whether the references of the both are equal or not?

.equals() is used to the compare the values in that references.

== is used to compare the number type data types viz. int, float,double  and also the boolean datatypes.

e.g. int x=10;

if(x==10)

{

// your code

}

boolean flag = true;

if(flag==false)

{

// Action1

}

if(flag==ture)

{

//Action2

}

.equals() method is used to compare the String data types

viz.

String str = "Hello";

if(str.equals("Hello"))

{

// Your code of action

}

1.    == is swallo comparison. Means it will use the memory location for comparison rather that the data.

2. .equals() is indepth comparison. I will check the content between two object rather that the memory location.

== is used for checking the datatypes values like int,float,double..

.equals is used to check the Objects like String,Vector ....

The difference between ==  and .equals is

String a="john",b="joi";

if (a.equals(b))// it compares internaly for the same materials

if(a==b)// it compares for the memory location