java小白——利用GUI的AWT创建窗体

曾经终败给现在 2023-06-16 10:34 9阅读 0赞

**窗体一：**

package gui.awt;
    
    import java.awt.Button;
    import java.awt.FlowLayout;
    import java.awt.Frame;
    
    public class Test1 {
        
    	public static void main(String[]args){
        
    		Frame f	= new Frame("我的第一个窗体！");
    		f.setLayout(new FlowLayout(FlowLayout.LEFT,20,30));
    		//把f窗体设置为流式布局管理器，所有组件左对齐，水平间距为20，垂直间距为30
    		f.setSize(400,300);//设置窗体的宽和高
    		f.setLocation(300,200);//设置窗体在屏幕中所处的位置坐标以屏幕左上角为原点
    		f.setVisible(true);//设置窗体可见
    		f.add(new Button("按钮1"));
    		f.add(new Button("按钮2"));
    		f.add(new Button("按钮3"));
    		f.add(new Button("按钮4"));
    		f.add(new Button("按钮5"));
    		f.add(new Button("按钮6"));
    		f.setVisible(true);//设置窗体可见
    	}
            
    }

**运行：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA_size_16_color_FFFFFF_t_70]  
**窗体二：**

package gui.awt;
    
    import java.awt.Button;
    import java.awt.Frame;
    import java.awt.GridLayout;
    
    public class Test2 {
        
    
    	public static void main(String[] args) {
        
    		// TODO Auto-generated method stub
            Frame f = new Frame("计算器");
            f.setLayout(new GridLayout(3,3));//设置该网格窗体布局为3*3的网格
            f.setSize(400,300);
            f.setLocation(400,300);
            for(int i=1;i<=9;i++){
        
            	Button btn = new Button(i+" ");
            	f.add(btn);
            }
            f.setVisible(true);
    	}
    
    }

**运行：**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA_size_16_color_FFFFFF_t_70 1]  
**窗体三：**

package gui.awt;
    
    import java.awt.Button;
    import java.awt.Frame;
    import java.awt.GridBagConstraints;
    import java.awt.GridBagLayout;
    
    class Layout extends Frame {
        
    	public Layout(String title) {
        
    		GridBagLayout layout = new GridBagLayout();
    		GridBagConstraints c = new GridBagConstraints();
    		this.setLayout(layout);
    		c.fill = GridBagConstraints.BOTH; // 设置组件横向纵向可以拉伸
    		c.weightx = 1; // 设置横向权重为1
    		c.weighty = 1; // 设置纵向权重为1
    		this.addComponent("btn1", layout, c);
    		this.addComponent("btn2", layout, c);
    		this.addComponent("btn3", layout, c);
    		c.gridwidth = GridBagConstraints.REMAINDER; // 添加的组件是本行最后一个组件
    		this.addComponent("btn4", layout, c);
    		c.weightx = 0; // 设置横向权重为0
    		c.weighty = 0; // 设置纵向权重为0
    		addComponent("btn5", layout, c);
    		c.gridwidth = 1; // 设置组件跨一个网格(默认值)
    		this.addComponent("btn6", layout, c);
    		c.gridwidth = GridBagConstraints.REMAINDER; // 添加的组件是本行最后一个组件
    		this.addComponent("btn7", layout, c);
    		c.gridheight = 2; // 设置组件纵向跨两个网格
    		c.gridwidth = 1; // 设置组件横向跨一个网格
    		c.weightx = 2; // 设置横向权重为2
    		c.weighty = 2; // 设置纵向权重为2
    		this.addComponent("btn8", layout, c);
    		c.gridwidth = GridBagConstraints.REMAINDER;
    		c.gridheight = 1;
    		this.addComponent("btn9", layout, c);
    		this.addComponent("btn10", layout, c);
    		this.setTitle(title);
    		this.pack();
    		this.setSize(400,300);
    		this.setLocation(400,300);
    		this.setVisible(true);
    	}
    	// 增加组件的方法
    	private void addComponent(String name, GridBagLayout layout,
    			GridBagConstraints c) {
        
    		Button bt = new Button(name); // 创建一个名为name的按钮
    		layout.setConstraints(bt, c); // 设置GridBagConstraints对象和按钮的关联
    		this.add(bt); // 增加按钮
    	}
    }
    public class Test3 {
        
    	public static void main(String[] args) {
        
    		new Layout("GridBagLayout");
    	}
    }

**运行：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA_size_16_color_FFFFFF_t_70 2]**窗体四：**

package gui.awt;
    
    import java.awt.BorderLayout;
    import java.awt.Button;
    import java.awt.CardLayout;
    import java.awt.Frame;
    import java.awt.Label;
    import java.awt.Panel;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    
    class Cardlayout extends Frame implements ActionListener {
        
    	Panel cardPanel = new Panel(); // 定义Panel面板放置卡片
    	Panel controlpaPanel = new Panel(); // 定义Panel面板放置按钮
    	Button nextbutton, preButton;       //声明两个按钮
    	CardLayout cardLayout = new CardLayout();// 定义卡片布局对象
    	// 定义构造方法，设置卡片布局管理器的属性
    	public Cardlayout() {
         
    		setSize(300, 200);
    		setVisible(true);
    		// 为窗口添加关闭事件监听器
    		this.addWindowListener(new WindowAdapter() {
        
    			public void windowClosing(WindowEvent e) {
        
    				Cardlayout.this.dispose();
    			}
    		});
    		cardPanel.setLayout(cardLayout); // 设置cardPanel面板对象为卡片布局
    		// 在cardPanel面板对象中添加3个文本标签
    		cardPanel.add(new Label("第一个界面", Label.CENTER));
    		cardPanel.add(new Label("第二个界面", Label.CENTER));
    		cardPanel.add(new Label("第三个界面", Label.CENTER));
    		// 创建两个按钮对象
    		nextbutton = new Button("下一张卡片");
    		preButton = new Button("上一张卡片");
    		// 为按钮对象注册监听器
    		nextbutton.addActionListener(this);
    		preButton.addActionListener(this);
    		// 将按钮添加到controlpaPanel中
    		controlpaPanel.add(preButton);
    		controlpaPanel.add(nextbutton);
    		// 将cardPanel面板放置在窗口边界布局的中间，窗口默认为边界布局
    		this.add(cardPanel, BorderLayout.CENTER);
    		// 将controlpaPanel面板放置在窗口边界布局的南区，
    		this.add(controlpaPanel, BorderLayout.SOUTH);
    	}
    	// 下面的代码实现了按钮的监听触发，并对触发事件做出相应的处理
    	public void actionPerformed(ActionEvent e) {
        
    		// 如果用户单击nextbutton，执行的语句
    		if (e.getSource() == nextbutton) {
        
    			// 切换cardPanel面板中当前组件之后的一个组件，若当前组件为最后一个组件，则显示第一个组件。
    			cardLayout.next(cardPanel);
    		}
    		if (e.getSource() == preButton) {
        
    			// 切换cardPanel面板中当前组件之前的一个组件，若当前组件为第一个组件，则显示最后一个组件。
    			cardLayout.previous(cardPanel);
    		}
    	}
    }
    public class Test4 {
        
    	public static void main(String[] args) {
        
    		Cardlayout cardlayout = new Cardlayout();
    	}
    }

**运行：**  
![在这里插入图片描述][20191125205136270.png]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191125204402143.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191125204414611.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191125204422923.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTE3NDIwOA==,size_16,color_FFFFFF,t_70
[20191125205136270.png]: https://img-blog.csdnimg.cn/20191125205136270.png