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2019.5.2

class ClassLoaderFrame extends JFrame{
       private JTextField keyField = new JTextField("3", 4);    private JTextField nameField = new JTextField("Calculator", 30);    private static final int DEFAULT_WIDTH = 300;    private static final int DEFAULT_HEIGHT = 200;    public ClassLoaderFrame(){
           setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);        setLayout(new GridBagLayout());        add(new JLabel("Class"),new GBC(0,0).setAnchor(GBC.EAST));            }}

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