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package midterm2; import javax.swing.*; import java.awt.*; import java.awt.event.*; public class midterm1task1 { public static void main(String[] args) { // TODO Auto-generated method stub JFrame frame = new JFrame(); frame.setSize(300, 200); JButton b1 = new JButton("100"); JButton b2 = new JButton("0"); frame.add(b1, BorderLayout.NORTH); frame.add(b2, BorderLayout.SOUTH); b1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int a = Integer.parseInt(b2.getLabel()); a++; b2.setLabel(""+a); } }); b2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int b = Integer.parseInt(b1.getLabel()); b--; b1.setLabel(""+b); } }); frame.setVisible(true); } }