JAVA 攻城狮第二十四天_c.fill = gridbagconstraints.both;-优快云博客

本文介绍了Java中常用的四种布局管理器：FlowLayout、BorderLayout、GridLayout和GridBagLayout，并通过实例详细展示了GridBagLayout的使用方法。

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今天是第二十四天
昨天晚上宿舍停电热的睡不着所以早上7点多才起来
然后把宿舍整理了之后就去实验室写这周的图论题目
然后哈哈因为正式开始写是明天开始写然后我就占了四个绿灯然后准备明天早上起早一点继续写争取亮一排绿灯。绿灯代表First Blood 一血

然后今天看了java的布局的一些知识
上总结

//布局
  //1.顺序布局FlowLayout
       //FlowLayout flo = new FlowLayout(FlowLayout.LEET,20,60);  表示水平对齐，20表示水平间隔，60表示垂直间隔。
       //setFlowLayout(flo);
  //2.边界布局BorderLayout
       //Border译为边界，BorderLayout按照east west south north center各个方位进行布局
       //注意：Frame的默认布局是BorderLayout布局，可以省略setLayout语句。
  //3.网格布局GridLayout
       //setLayout(new GridLayout(3,2)); 将窗口分为3行2列的网格。
  //4.网格袋布局GridBagLayout
       //给出一个例子：smp68.java
       //smp68.java
       import java.awt.*;
       import java.awt.event.*;
       public class smp68 extends Frame implements ActionListener{
        Button btn;
        smp68(){
            super("GridBagLayout布局");
            setVisible(true);
            GridBagLayout gridbag = new GridBagLayout();
            GridBagConstraints c = new GridBagConstraints(); //constraint 约束
            setLayout(gridbag);
            c.fill = GridBagConstraints.BOTH;
            makebutton("Button0",gridbag,c);
            makebutton("Button1",gridbag,c);
            makebutton("Button2",gridbag,c);
            makebutton("Button3",gridbag,c);
            c.gridwidth = GridBagConstraints.REMAINDER;
            makebutton("Button4",gridbag,c);
            c.gridwidth = 2;
            makebutton("Button5",gridbag,c);
            c.gridwidth = 1;
            makebutton("Button51",gridbag,c);
            c.gridwidth = GridBagConstraints.REMAINDER;
            makebutton("Button52",gridbag,c);
            c.gridwidth = GridBagConstraints.RELATIVE;
            makebutton("Button6",gridbag,c);
            c.gridwidth = GridBagConstraints.REMAINDER;
            makebutton("Button7",gridbag,c);
            c.gridwidth = 1;
            c.gridheight = 2;
            makebutton("Button8",gridbag,c);
            c.gridwidth = GridBagConstraints.REMAINDER;
            c.gridheight = 1;
            makebutton("Button9",gridbag,c);
            makebutton("exit",gridbag,c);
            btn.addActionListener(this);
            pack();
        }
        protected void makebutton(String name,GridBagLayput gridbag,GridBagConstraints c){
            btn = new Button(name);
            gridbag.setConstraints(btn,c);
            add(btn);
        }
        public void actionPerformed(ActionEvent e){
            if(e.getSource()==btn)
                System.exit(0);
        }
        public static void main(String[] args) {
            snp68 smp = new smp68();
        }
       }