不知大家怎么看，怎么想
import java.awt.*;
import java.awt.event.*;
public class QueryFrame extends Frame
{
private TextField text_char;
private Checkbox check_str;
int year;
int result=1;
public QueryFrame()
{
super("判断闰年");
this.setBounds(280,100,300,240);
this.setBackground(java.awt.Color.lightGray);

text_char=new TextField("2011",10);

this.add(text_char);
this.add(new Label("年份"));
check_str=new Checkbox("");
this.add(check_str);
if(year%400==0||year%4==0&&year%100!=0)
check_str(result);
}


public static void main(String args[])
{new QueryFrame();
}
}
它显示说我check_str(result);错了，
我就是编一个java程序
在一个文本框中输入一个整数，判断是否是闰年，是checkbox就处于选中状态的


[解决办法]
用SWING重新给你做了一下界面，AWT太恶心了

Java code

/** * Created by IntelliJ IDEA. * User: gaoyong * Date: 2011-10-14 * Time: 22:48:04 * To change this template use File | Settings | File Templates. */import javax.swing.*;import java.awt.*;import java.awt.event.*;public class QueryFrame extends JFrame{    private JTextField text_char;    private JCheckBox check_str;    private JButton button;    int year;    int result=1;    public QueryFrame(){        super("判断闰年");        this.setBounds(280,100,300,240);        this.setBackground(java.awt.Color.lightGray);        text_char=new JTextField("2011",10);        button=new JButton("提交");        button.addActionListener(new ActionListener(){            public void actionPerformed(ActionEvent e){                String yearStr=text_char.getText();                year=Integer.parseInt(yearStr);                if(year%400==0||year%4==0&&year%100!=0){//                    check_str.setState(result==1);                    check_str.setSelected(result==1);                    check_str.repaint();                }            }        });        this.getContentPane().setLayout(new FlowLayout());        this.getContentPane().add(text_char);        this.getContentPane().add(new JLabel("年份"));        this.getContentPane().add(button);        check_str=new JCheckBox("");        this.getContentPane().add(check_str);        this.setVisible(true);        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    }    public static void main(String args[])    {        new QueryFrame();    }}