test.java

一个简单的注册系统

/**
 *@用户注册系统 
 *@版本 V1.0
 *@二00六年4月22日
 *@小刘制作
 */
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
//使用JFrame面板并实现坚听
class test extends JFrame implements ActionListener
{
	//定义各组件
	JPanel p1;JPanel p2;JPanel p3;JPanel p4;
	JButton bt1;JButton bt2;
	Checkbox r1;Checkbox r2;CheckboxGroup cg;
	JCheckBox c1;JCheckBox c2;JCheckBox c3;
	JLabel j1;JLabel j2;JLabel j3;JLabel j4;JLabel j5;JLabel j6;
	JTextField t1;JTextField t3;JPasswordField t2;
	JComboBox Income;
	//给各组件赋值
	public test(String title)
	{
		super(title);
		Container c = getContentPane();
		p1 = new JPanel();
		p2 = new JPanel();
		p3 = new JPanel();
		p4 = new JPanel();
		cg = new CheckboxGroup();
		r1 = new Checkbox("GG", cg,true);
		r2 = new Checkbox("MM", cg, false);
		bt1 = new JButton("注册");
		bt2 = new JButton("重置");
		c1 = new JCheckBox("PK");
		c2 = new JCheckBox("泡MM");
		c3 = new JCheckBox("自恋");
		j1 = new JLabel("姓名:");
		j2 = new JLabel("密码:");
		j3 = new JLabel("伊妹儿:");
		j4 = new JLabel("性别:");
		j5 = new JLabel("爱好:");
		j6 = new JLabel("月收入:");
		t1 = new JTextField(20);
		t2=new  JPasswordField(20);
		t3 = new JTextField(20);
		String m[] = {"1000以下","2000~3000","3000~4000","4000以上"};
		Income = new JComboBox(m);
		//把Panel加到JFrame中，并用网格布局排列
		p1.setLayout(new GridLayout(3,2,10,10));
		p1.add(j1);p1.add(t1);p1.add(j2);p1.add(t2);p1.add(j3);p1.add(t3);
		p2.setLayout(new GridLayout(1,1,50,0));
		p2.add(j4);p2.add(r1);p2.add(r2);
		p3.setLayout(new GridLayout(1,1,50,0));
		p3.add(j5);p3.add(c1);p3.add(c2);p3.add(c3);
		p4.setLayout(new GridLayout(2,2,2,2));
		p4.add(j6);p4.add(Income);p4.add(bt1);p4.add(bt2);
		c.setLayout(new GridLayout(4,1));
		c.add(p1);c.add(p2);c.add(p3);c.add(p4);
		//对按钮进行监听
		bt1.addActionListener(this);
		bt2.addActionListener(this);
	}
	//对事件进行处理
	public void actionPerformed(ActionEvent e)
	{
		int ok1=0,ok2=0,ok3=0;
		String str1=new String();String str2=new String();
		String str3=new String();String str4=new String();
		String str5=new String();
		//判断用户名是否为空
		if(e.getSource()==bt1)
		{
			str1=t1.getText();
			if(str1.length()==0)
			{
				JOptionPane.showMessageDialog(this,"姓名不能为空");
			}
			else
			{
				ok1=1;
			}
		}
		//判断密码是否为空并且是否为8位
		if(e.getSource()==bt1)
		{
		
			char s[];
			s=t2.getPassword();
			str2=new String(s);
			if(str2.length()==0)
			{
				JOptionPane.showMessageDialog(this,"您没有输入密码");
			}
			else if(str2.length()<8)
			{
				JOptionPane.showMessageDialog(this,"密码不满8位");
			}
			else
			{
				ok2=1;
			}
		}	
		//判断邮件是否为空或是否合法
		if(e.getSource()==bt1)
		{
			int a1=0,a2=0,a3=0;
			int b1=0;
			boolean red=true;
			str3=t3.getText();
			int len=str3.length();
			System.out.println("len="+len);
			int i=0,j=0,k=0;
			while(red)
			{	
				if(str3.length()==0)
				{
					JOptionPane.showMessageDialog(this,"邮件没写，傻瓜");
					red=false;
					break;
				}
				else
				{
					a1=1;
				}
				for(i=0;i<len;i++)
				{
					if(str3.charAt(i)=='@')
					{
						j=i;break;
					}
				}	
				for(i=0;i<len;i++)
				{
					if(str3.charAt(i)=='.')
					{
						k=i;break;
					}
				}
				System.out.println("j="+j);
				System.out.println("k="+k);
				if(j>=k||j==0||k-j<=2)
				{
					JOptionPane.showMessageDialog(this,"邮件格式错误");
					red=false;
					break;
				}
				else
				{
					a2=1;
				}
				for(i=j+1;i<len;i++)
				{	
				System.out.println("i="+i);
					if(i!=k)
					{
						if(str3.charAt(i)=='.'||str3.charAt(i)=='@')
						{
							JOptionPane.showMessageDialog(this,"邮件格式错误");
							b1=1;
							red=false;
							break;
						}
						else
						{
							a3=1;
						}
					}	
				}
				if(b1==1)
				{
					break;
				}
				if(a1==1&&a2==1&&a3==1)
				{
					ok3=1;
					red=false;
				}
			}
		}	
		//把性别与爱好分别赋给字符串str3和str4
		if(e.getSource()==bt1)
		{
			Checkbox s=cg.getSelectedCheckbox();
			str4=s.getLabel();
			if(c1.isSelected())
			{
				str5=str5+" "+ c1.getText();
			}     
            else if(c2.isSelected())
            {
             	str5=str5+" "+c2.getText();
            }
            else if(c3.isSelected())
            {
              	str5=str5+" "+c3.getText();
            }
            else
            {
                str5="无";
            }           
		}
		//最后将用户的输入与选择打印出来
		if(e.getSource()==bt1)
		{
			if(ok1==1&&ok2==1&&ok3==1)
			{
				JOptionPane.showMessageDialog(this,"用户名:"+str1+'\n'+
				"密码:"+str2+'\n'+"伊妹儿:"+str3+'\n'+"性别:"+str4+'\n'+
				"爱好:"+str5+'\n'+"收入:"+Income.getSelectedItem());
			}
			t1.setText(null);t2.setText(null);t3.setText(null);
			c1.setSelected(false);c2.setSelected(false);c3.setSelected(false);
			Income.setSelectedIndex(0);
		}
		//如果重置按钮被按下
		if(e.getSource()==bt2)
		{
			t1.setText(null);t2.setText(null);t3.setText(null);
			c1.setSelected(false);c2.setSelected(false);c3.setSelected(false);
			Income.setSelectedIndex(0);
		}
	}
	//程序的入口
	public static void main(String args[])
	{
		test p = new test("用户注册");
		p.setSize(400,400);
		p.setVisible(true);
		p.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}