How to add numberpicker values and display in toast

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Android

Android4x

I have two number pickers Numberpicker1 and Numberpicker2
Numberpicker 1 => numberpicker1.setminvalue(1) and numberpicker1.setmaxvalue(7)
Numberpicker 2 => numberpicker2.setminvalue(0) and numberpicker2.setmaxvalue(12)


My design code

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:id="@+id/layout1"
    >
    <NumberPicker
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/picker1"
        android:layout_marginRight="20dp"
        android:layout_marginEnd="20dp"></NumberPicker>


    <NumberPicker
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/picker2"
        ></NumberPicker>
</LinearLayout>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/layout1"
    android:text="SUBMIT"
    android:layout_centerInParent="true"
    android:layout_margin="10dp"
    />

My Mainactivity Code

public class MainActivity extends AppCompatActivity {
NumberPicker pick1,pick2;
Button btnsubmit;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        pick1 = (NumberPicker)findViewById(R.id.picker1);
        pick2 = (NumberPicker)findViewById(R.id.picker2);

        pick1.setMinValue(1);
        pick1.setMaxValue(7);
        pick2.setMinValue(0);
        pick2.setMaxValue(12);

        btnsubmit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v)
            {
                try
                {

                }
                catch (Exception e)
                {
                    e.getMessage();
                }
            }
        });

    }
}

What I have tried:

The output is not showing displaying unfortunately stopped app gets crashed
pls help out.And even my onclick button code is not working error i am unable to rectify.i dont have much knowledge about coding pls correct my code and send here