성님들 자바 질문있음요...

[as9dasd(119.195)]

import java.awt.*;
import java.util.Calendar;
import java.util.GregorianCalendar;
import javax.swing.*;

public class View extends JPanel {
 private JFrame f = new JFrame("123");
 private JMenuBar menuBar = new JMenuBar();

 public View() {
  f = new JFrame("호텔 관리 시스템");
  f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  f.getContentPane().add(this);
  f.setSize(700, 700);
  f.setVisible(true);
  createMenu();
  createNameText();
  reservedRoom();
  enrollAndcheck();
  
 }

 public void paintComponent(Graphics g) {
  GregorianCalendar Y = new GregorianCalendar();
  int l = Y.get(Calendar.YEAR);
  int m = Y.get(Calendar.MONTH) + 1;
  int n = Y.get(Calendar.DATE);
  g.setColor(Color.BLACK);
  g.drawRect(100, 50, 500, 40);
  Font f = new Font("", Font.BOLD, 20);
  g.setFont(f);
  g.drawString("123", 250, 75);
  Font k = new Font("", Font.BOLD, 14);
  g.setFont(k);
  g.drawString("투숙예약", 40, 120);
  g.drawString("객실현황", 360, 120);
  g.drawString("(" + l + "/0" + m + "/" + n + ")", 550, 120);
  g.drawString("등록/조회", 40, 400);
  Font j = new Font("", 6, 12);
  g.setFont(j);
 }

 private void createMenu() {
  menuBar = new JMenuBar();
  JMenu fileMenu = menuBar.add(new JMenu("File"));
  JMenuItem saveMenuItem = fileMenu.add(new JMenuItem("Open"));
  saveMenuItem.setActionCommand("load");
  f.setJMenuBar(menuBar);
 }

 private void createNameText() {
  JPanel formPanel1 = new JPanel();
  f.getContentPane().add(BorderLayout.CENTER, formPanel1);
  formPanel1.setBounds(30, 130, 300, 250);
  formPanel1.setBackground(Color.white);JLabel label1 = new JLabel("고객명");
  JLabel label2 = new JLabel("체크인(YYYYMMDD)");
  JLabel label3 = new JLabel("박");
  JLabel label4 = new JLabel("객실");
  label1.setBounds(10, 10, 40, 40);
  label2.setBounds(10, 50, 120, 40);
  label3.setBounds(10, 90, 40, 40);
  label4.setBounds(10, 130, 40, 40);
  formPanel1.add(label1);
  formPanel1.add(label2);
  formPanel1.add(label3);
  formPanel1.add(label4);
  JTextField field1 = new JTextField(10);
  JTextField field2 = new JTextField(10);
  field1.setBounds(150, 10, 120, 20);
  field2.setBounds(150, 50, 120, 20);
  formPanel1.add(field1);
  formPanel1.add(field2);
  JComboBox jcb1 = new JComboBox();
  for (int i = 1; i <= 5; i++) {
   jcb1.addItem(i);
  }
  jcb1.setBounds(150, 90, 120, 20);
  formPanel1.add(jcb1);
  JComboBox jcb2 = new JComboBox();
  for (int i = 0; i < 10; i++) {
   jcb2.addItem(101 + i);
  }
  for (int i = 0; i < 10; i++) {
   jcb2.addItem(201 + i);
  }
  jcb2.setBounds(150, 130, 120, 20);
  formPanel1.add(jcb2);
  JButton but1 = new JButton("예약 등록/변경");
  JButton but2 = new JButton("예약취소");
  but1.setBounds(0, 180, 120, 30);
  but2.setBounds(150, 180, 120, 30);
  formPanel1.add(but1);
  formPanel1.add(but2);

  this.setVisible(true);

 }

 private void reservedRoom() {

  JPanel formPanel2 = new JPanel();
  f.getContentPane().add(BorderLayout.CENTER, formPanel2);
  formPanel2.setBounds(350, 130, 330, 250);
  formPanel2.setBackground(Color.white);

  JButton[] but3 = new JButton[20];
  for (int i = 0; i < 5; i++) {
   but3[i] = new JButton(i + 101 + "");
  }
  for (int i = 0; i < 5; i++) {
   formPanel2.add(but3[i]);
   but3[i].setBounds(56 * i + 10, 5, 55, 45);
   but3[i].setBackground(Color.white);
  }
  for (int i = 5; i < 10; i++) {
   but3[i] = new JButton(i + 101 + "");
  }
  for (int i = 5; i < 10; i++) {
   formPanel2.add(but3[i]);
   but3[i].setBounds(56 * (i - 5) + 10, 55, 55, 45);
   but3[i].setBackground(Color.white);
  }
  for (int i = 10; i < 15; i++) {
   but3[i] = new JButton(i + 191 + "");
  }
  for (int i = 10; i < 15; i++) {
   formPanel2.add(but3[i]);
   but3[i].setBounds(56 * (i - 10) + 10, 105, 55, 45);
   but3[i].setBackground(Color.white);
  }
  for (int i = 15; i < 20; i++) {
   but3[i] = new JButton(i + 191 + "");
  }
  for (int i = 15; i < 20; i++) {
   formPanel2.add(but3[i]);
   but3[i].setBounds(56 * (i - 15) + 10, 155, 55, 45);
   but3[i].setBackground(Color.white);
  }
  this.setVisible(true);
 }

 public void enrollAndcheck(){
  
  JTabbedPane jtb = new JTabbedPane(JTabbedPane.TOP);
f.getContentPane().add(BorderLayout.CENTER, jtb);
jtb.setBounds(60, 430, 550, 170);

jtb.addTab("손님", customer());

 }

 public JComponent customer() {

  JPanel formPanel4 = new JPanel();
  f.getContentPane().add(BorderLayout.CENTER, formPanel4);

  formPanel4.setBackground(Color.black);

  return formPanel4;
 }
}






import javax.swing.*;

public class Hotelreservation extends JPanel {
 public static void main(String args[]) {
  new View();
 }
}
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