neworder.java

我的JAVA, 不知道好不好,希望你可以改

import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;


public class NewOrder extends JFrame implements ActionListener
{
  JMenuBar menubar;
  JMenu menu;
  JMenuItem item;
  JTextField N1text,N2text,N3text,N4text;
  Box NbaseBox,NboxV1,NboxV2;
  NewOrder(String s)
  {
    super(s);
    setSize(260,270);
    setLocation(120,120);
    setVisible(true);
    menubar=new JMenuBar();
    menu=new JMenu("neworder");
    item=new JMenuItem("over");
    
    menu.add(item);
    menubar.add(menu);
    setJMenuBar(menubar);
    NboxV1=Box.createVerticalBox();
    NboxV1.add(new JLabel("Number001"));
    NboxV1.add(Box.createVerticalStrut(8));
    NboxV1.add(new JLabel("Number002"));
    NboxV1.add(Box.createVerticalStrut(8));
    NboxV1.add(new JLabel("Number003"));
    NboxV1.add(Box.createVerticalStrut(8));
    NboxV1.add(new JLabel("Number004"));
    NboxV2=Box.createVerticalBox();
    N1text=new JTextField(16);
    N1text.addActionListener(this);
    NboxV2.add(N1text);
    NboxV2.add(Box.createVerticalStrut(8));
    N2text=new JTextField(16);
    N2text.addActionListener(this);
    NboxV2.add(N2text);
    NboxV2.add(Box.createVerticalStrut(8));
    N3text=new JTextField(16);
    N3text.addActionListener(this);
    NboxV2.add(N3text);
    NboxV2.add(Box.createVerticalStrut(8));
    N4text=new JTextField(16);
    N4text.addActionListener(this);
    NboxV2.add(N4text);
    NbaseBox=Box.createHorizontalBox();
    NbaseBox.add(NboxV1);
    NbaseBox.add(Box.createHorizontalStrut(10));
    NbaseBox.add(NboxV2);
    Container Ncon=getContentPane();
    Ncon.setLayout(new FlowLayout());
    Ncon.add(NbaseBox);
    Ncon.validate();
    setDefaultCloseOperation(NewOrder.EXIT_ON_CLOSE);
  }
  public void actionPerformed(ActionEvent e)
  {
    
    String A;
    if(e.getSource()==N1text)
    {
      if((N1text==null)||(Integer.parseInt(N1text.getText())<=0))
      {
        JOptionPane.showMessageDialog(this,"请输入正数量","警告对话框",JOptionPane.WARNING_MESSAGE);
      }
      else
      {
        Number001.getNumber(Integer.parseInt(N1text.getText().trim()));
        Number001.thismax(Integer.parseInt(N1text.getText().trim()));
        
      }
    }
    else if(e.getSource()==N2text)
    {
      if((N2text==null)||(Integer.parseInt(N2text.getText())<=0))
      {
        JOptionPane.showMessageDialog(this,"请输入正数量","警告对话框",JOptionPane.WARNING_MESSAGE);
      }
      else
      {
        Number002.getNumber(Integer.parseInt(N2text.getText().trim()));
        Number002.thismax(Integer.parseInt(N2text.getText().trim()));
        
      }
    }
    else if(e.getSource()==N3text)
    {
      if((N3text==null)||(Integer.parseInt(N3text.getText())<=0))
      {
        JOptionPane.showMessageDialog(this,"请输入正数量","警告对话框",JOptionPane.WARNING_MESSAGE);
      }
      else
      {
        Number003.getNumber(Integer.parseInt(N3text.getText().trim()));
        Number003.thismax(Integer.parseInt(N3text.getText().trim()));
        
      }
    }
    else if(e.getSource()==N4text)
    {
      if((N4text==null)||(Integer.parseInt(N4text.getText())<=0))
      {
        JOptionPane.showMessageDialog(this,"请输入正数量","警告对话框",JOptionPane.WARNING_MESSAGE);
      }
      else
      {
        Number004.getNumber(Integer.parseInt(N4text.getText().trim()));
        Number004.thismax(Integer.parseInt(N4text.getText().trim()));
        
      }
    }
  }
  
}