One Activity To another Activity in android app

When we click on button, we should go to another activity. Lets use existing project.

add second activity on button listenerL

clickButton.setOnClickListener(new View.OnClickListener() {
    @Override    public void onClick(View view) {
        //Toast.makeText(getApplicationContext(),"You just clicked button",Toast.LENGTH_LONG).show();        Intent intent = new Intent(MainActivity.this,SecondActivity.class);
        startActivity(intent);
    }
});

Now add second activity:

right click on res folder and create SecondActivity:

New--> Activity--> Empty Activity

When we run code as shown below,

When we click on 'CLICK ME' button, below second activity comes: