如何从Java向Android中的按钮添加图标？

<Button
    android:id="@+id/myButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Click Me" />

<ImageView
    android:id="@+id/iconImageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/my_icon" />

Button myButton = findViewById(R.id.myButton);
ImageView iconImageView = findViewById(R.id.iconImageView);

Drawable icon = getResources().getDrawable(R.drawable.my_icon);
iconImageView.setImageDrawable(icon);