Button to go back to MainActivity

Issue

I want to create a button that would lead the user straight back to main activity which doesn't have the android name="com.example.example".
It has android.intent.etc...
How can I reference my button to go back to this activity?

Solution

Lets say your main activity is called Main.java.

btnBack.setOnClickListener(new OnClickListener(){

  private void onClick(){
    Intent intent = new Intent(currentActivity.this, Main.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);   
    startActivity(intent);
  }
});

Answered By - zzzzzzzzzzzzzzzzzzzzzzzzzzzzzz