How can an entire array be given the same value in java?

Question

Java

There is an array of buttons:
For example

private final int COUNT = 9;
        private Button[] btn= new Button[COUNT];

        btn[0] = (Button) findViewById(R.id.button1);
        btn[1] = (Button) findViewById(R.id.button2);
        btn[2] = (Button) findViewById(R.id.button3);
        btn[3] = (Button) findViewById(R.id.button4);
        btn[4] = (Button) findViewById(R.id.button5);
        btn[5] = (Button) findViewById(R.id.button6);
        btn[6] = (Button) findViewById(R.id.button7);
        btn[7] = (Button) findViewById(R.id.button8);
        btn[8] = (Button) findViewById(R.id.button9);

How can all btn[] buttons be set to setEnabled(false); ?

Answer 1

for (int i = 0; i < COUNT; i++) {
            btn[i].setEnabled(false);
        }

Answer 2

It is necessary to loop through all child in the parent element and assign a value.