package?com.mstanford;
import?java.awt.FlowLayout;
import?javax.swing.*;
import?javax.swing.table.DefaultTableModel;
public?class?MainFrame?extends?JFrame?{
????public?JButton?btn1,btn2,btn3,btn4,btn5;
????public?MainFrame()?{
????????this.setTitle("這是一個swing窗體");
????????this.setBounds(200,?100,?800,?500);
????????this.setVisible(true);
????????this.setResizable(false);
????????//?實例化標簽
????????JLabel?lblPwd?=?new?JLabel();
????????//?增加圖片
??????????ImageIcon?imgIcon?=?new?ImageIcon("E:/images/imagen8.jpg");
????????????JLabel?lblImg?=?new?JLabel(imgIcon);
??????????this.getContentPane().add(lblImg);
????????//?創建表格
????????//?String?columnNames[]={"會員管理","姓名","電話","城市"};
????????//?DefaultTableModel?model=new?DefaultTableModel(columnNames,0);
????????//?JTable?Tb?=?new?JTable(model);
????????//流動布局
???????????this.setLayout(new?FlowLayout(FlowLayout.LEFT));
????
????????//?實例化按鈕
????????JButton?btn1?=?new?JButton("按鈕1");
????????JButton?btn2?=?new?JButton("按鈕2");
????????JButton?btn3?=?new?JButton("按鈕3");
????????JButton?btn4?=?new?JButton("按鈕4");
????????JButton?btn5?=?new?JButton("按鈕5");
????????//?添加面板
????????this.getContentPane().add(btn1);
????????this.getContentPane().add(btn2);
????????this.getContentPane().add(btn3);
????????this.getContentPane().add(btn4);
????????this.getContentPane().add(btn5);
????????
????}
????public?static?void?main(String[]?args)?{
????????new?MainFrame();
????}
}怎樣將圖片設置為背景并且全覆蓋窗體，還有按鈕是怎樣定位??！請大神們指導
1 回答
奔跑的蟲子
TA貢獻33條經驗 獲得超21個贊
添加背景圖片?可以重繪JPanel的paint方法:如下
將你的Jlabel換成下面的類
class?MyPanel?extends?JPanel{
????private?Image?img=null;
????public?MyPanel(){
????????img=Toolkit.getDefaultToolkit().getImage("E:/images/imagen8.jpg");
????????
????}
????public?void?paint(Graphics?g){
????????super.paint(g);
????????g.drawImage(img,0,0,800,500,this);
????}
}
按鈕的布局可以使用絕對布局;
this.setLayout(null);
JButton?btn1?=?new?JButton("按鈕1");
btn1.setBounds(100,?100,?100,?60);????//x,y,width,height添加回答
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