画板问题
如何是画板上的控件随着窗口的最大画而变大搜索更多相关的解决方案:
画板
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这个问题解决方法有多种
第一种,是布局问题。你可以选择适当的layout,或者自己定义一个layout来布置你的控件。
第二种,在面板上增加一个resize监听器,在监听器中设置控件的大小
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程序代码:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MyFieldExample extends JFrame implements ActionListener
{
JLabel JL1,JL2,JL3;
JButton JB1,JB2;
JTextField JF1;
JPasswordField JP1;
public MyFieldExample()
{
super("登录界面");
JL1=new JLabel("用户名称");
JL1.setBounds(15,5,60,20);
JL2=new JLabel("登录密码");
JL2.setBounds(15,25,60,20);
JF1=new JTextField("",20);
JF1.setBounds(110,5,100,20);
JP1=new JPasswordField("",20);
JP1.setBounds(110,25,100,20);
JB1=new JButton("确定");
JB1.setBounds(35,50,60,30);
JB1.addActionListener(this);
JB2=new JButton("取消");
JB2.setBounds(130,50,60,30);
JB2.addActionListener(this);
JL3=new JLabel("");
JL3.setBounds(60,90,200,30);
Container winContainer=this.getContentPane();
winContainer.setLayout(null);
winContainer.add(JL1);
winContainer.add(JL2);
winContainer.add(JB1);
winContainer.add(JB2);
winContainer.add(JL3);
winContainer.add(JF1);
winContainer.add(JP1);
this.setSize(250,150);
this.setVisible(true);
}
public static void main(String args[])
{
MyFieldExample w1=new MyFieldExample();
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==JB1)
{
if(JF1.getText().equals("JAVA")&&JP1.getText().equals("1234"))
JL3.setText("输入正确,登录成功");
else
JL3.setText("输入错误,请重新输入");
}
else if
(e.getSource()==JB2)
System.exit(0);
}
}
帮忙看看,看怎么能最大化的时候,控件也跟着变换import java.awt.*;
import java.awt.event.*;
public class MyFieldExample extends JFrame implements ActionListener
{
JLabel JL1,JL2,JL3;
JButton JB1,JB2;
JTextField JF1;
JPasswordField JP1;
public MyFieldExample()
{
super("登录界面");
JL1=new JLabel("用户名称");
JL1.setBounds(15,5,60,20);
JL2=new JLabel("登录密码");
JL2.setBounds(15,25,60,20);
JF1=new JTextField("",20);
JF1.setBounds(110,5,100,20);
JP1=new JPasswordField("",20);
JP1.setBounds(110,25,100,20);
JB1=new JButton("确定");
JB1.setBounds(35,50,60,30);
JB1.addActionListener(this);
JB2=new JButton("取消");
JB2.setBounds(130,50,60,30);
JB2.addActionListener(this);
JL3=new JLabel("");
JL3.setBounds(60,90,200,30);
Container winContainer=this.getContentPane();
winContainer.setLayout(null);
winContainer.add(JL1);
winContainer.add(JL2);
winContainer.add(JB1);
winContainer.add(JB2);
winContainer.add(JL3);
winContainer.add(JF1);
winContainer.add(JP1);
this.setSize(250,150);
this.setVisible(true);
}
public static void main(String args[])
{
MyFieldExample w1=new MyFieldExample();
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==JB1)
{
if(JF1.getText().equals("JAVA")&&JP1.getText().equals("1234"))
JL3.setText("输入正确,登录成功");
else
JL3.setText("输入错误,请重新输入");
}
else if
(e.getSource()==JB2)
System.exit(0);
}
}
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我举个例子,楼主自己修改啊
程序代码:
import java.awt.Container;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
public class B_H_J extends JFrame {
JLabel JL1, JL2, JL3;
JButton JB1, JB2;
JTextField JF1;
JPasswordField JP1;
public B_H_J() {
super("登录界面");
this.setSize(250, 150);
JB1 = new JButton("确定");
JB1.setBounds(35, 50, 60, 30);
Container winContainer = this.getContentPane();
winContainer.setLayout(null);
winContainer.add(JB1);
winContainer.addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
JB1.setBounds(15, 5, (int) (getSize().width * 0.4), (int) (getSize().height * 0.4));
}
});
this.setVisible(true);
}
public static void main(String args[]) {
B_H_J w1 = new B_H_J();
}
}
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
public class B_H_J extends JFrame {
JLabel JL1, JL2, JL3;
JButton JB1, JB2;
JTextField JF1;
JPasswordField JP1;
public B_H_J() {
super("登录界面");
this.setSize(250, 150);
JB1 = new JButton("确定");
JB1.setBounds(35, 50, 60, 30);
Container winContainer = this.getContentPane();
winContainer.setLayout(null);
winContainer.add(JB1);
winContainer.addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
JB1.setBounds(15, 5, (int) (getSize().width * 0.4), (int) (getSize().height * 0.4));
}
});
this.setVisible(true);
}
public static void main(String args[]) {
B_H_J w1 = new B_H_J();
}
}
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谢谢了,我在自己琢磨琢磨
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