Java GUI를 이용한 간단한 덧셈 프로그램

빈칸에 숫자를 입력하고 "확인"버튼을 누르면 값이 addBlank에 표시된다

"취소"를 누르면 모든 TextField가 초기화된다.

package guiExam; /** * * package name : guiExam * class name : JFrameAddProgramming.java * * @author : yunjin * @Date : 2017. 6. 23. */ import java.awt.*; import javax.swing.*; public class JFrameAddProgramming { public static void main(String[] args) {init(); FlowLayout flow = new FlowLayout(); JFrame frame = new JFrame("더하기 프로그램"); Container container = frame.getContentPane(); container.setLayout(flow); JButton confirm = new JButton("확인"); JButton reset = new JButton("취소"); JPanel panel = new JPanel(); JPanel panel1 = new JPanel(); JTextField firstBlank = new JTextField(5); JLabel oper = new JLabel("+"); JTextField secondBlank = new JTextField(5); JLabel result = new JLabel("="); JTextField addBlank = new JTextField(5); panel.add(firstBlank); panel.add(oper); panel.add(secondBlank); panel.add(result); panel.add(addBlank); panel1.add(confirm); panel1.add(reset); /*확인, 취소 이벤트 적용 부분*/ confirm.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int firstValue = Integer.parseInt(firstBlank.getText()); int secondValue = Integer.parseInt(secondBlank.getText()); int result = firstValue + secondValue; addBlank.setText(result+""); } }); reset.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub firstBlank.setText(""); secondBlank.setText(""); addBlank.setText(""); } }); /*****************************/ container.add(panel); container.add(panel1); frame.pack(); frame.setVisible(true); }