intent send text

//  How to send value using intent from one class to another class
//  class A(which will send data)
    Intent theintent = new Intent(A.this,B.java);
    theintent.putExtra("name",john);
    startActivity(theintent);
//  How to get these values in another class
//  Class B
    Intent i= getIntent();
    i.hasExtra("name");
//  if you log here i than you will get the value of i i.e. john