viewmonthtest.java

用java做的日历,适合初学者学习使用,交流

package Demo;
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.awt.event.*;
public class ViewMonthTest extends JPanel implements ActionListener{
	private ViewMonth vm;
	private JTextField jt1,jt2;
	private JButton jb1,jb2;
	private JLabel jl1,jl2;
	private JPanel jp;
	public ViewMonthTest(){
		int ye=new Date().getYear()+1900;
		int mon=new Date().getMonth()+1;
		jt1=new JTextField(""+ye);
		jt2=new JTextField(""+mon);
		jb1=new JButton("确定");
		jb2=new JButton("修改");
		jb1.addActionListener(this);
		jb2.addActionListener(this);
		JPanel jpb=new JPanel();
		jpb.add(jb1);
		jpb.add(jb2);
		JPanel jpt=new JPanel(new GridLayout(1,4));
		jpt.add(jl1=new JLabel("年"));
		jpt.add(jt1);
		jpt.add(jl2=new JLabel("月"));
		jpt.add(jt2);
		jl1.setHorizontalAlignment(JLabel.RIGHT);
		jl2.setHorizontalAlignment(JLabel.RIGHT);
		vm=new ViewMonth(ye,mon);
		jp=new JPanel(new BorderLayout());
		jp.add(vm,BorderLayout.CENTER);
		this.setLayout(new BorderLayout());
		this.add(jpt,BorderLayout.NORTH);
		this.add(jp,BorderLayout.CENTER);
		this.add(jpb,BorderLayout.SOUTH);
		
	}
	public void actionPerformed(ActionEvent e){
		if(e.getSource()==jb1){
			try{
				int year=Integer.parseInt(jt1.getText().trim());
				int mon=Integer.parseInt(jt2.getText().trim());
				if(year<1800 ||year>2100||mon>12||mon<1){
					JOptionPane.showMessageDialog(null,"您输入的数字超过范围","错误",
				JOptionPane.ERROR_MESSAGE);
				}
				else{
				vm=new ViewMonth(year,mon);
				jp.removeAll();
				jp.add(vm,BorderLayout.CENTER);
				SwingUtilities.updateComponentTreeUI(this);
				jt1.setEditable(false);
				jt2.setEditable(false);
			}
			}
			catch(NumberFormatException nume){
				JOptionPane.showMessageDialog(null,"您输入的数字有非法字符","错误",
				JOptionPane.ERROR_MESSAGE);
			}
		}
		else if(e.getSource()==jb2){
			jt1.setEditable(true);
			jt2.setEditable(true);
		}
	}
	public static void main(String args[]){
		JFrame j=new JFrame("测试");
		j.getContentPane().add(new ViewMonthTest());
		j.setBounds(300,400,300,300);
		j.setVisible(true);
		j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}