java中GUI界面运用Swing组件进行文件以及图片的拷贝

package GUI; import java.awt.*; import java.awt.event.*; import java.io.*; import javax.swing.*; //拷贝文件演示 public class CopyFileDemo extends JFrame{ private int value = 0; private static final int PROGRESS_MIN_VALUE = 0; private static final int PROGRESS_MAX_VALUE = 100; private static final int PROGRESS_HEIGHT = 20; private Timer timer; JFileChooser fileChooser; //文件选择器 JTextField jtfTargetFile; //目标文件路径 JTextField jtfSourceFile; //目标文件路径 JButton selectFile1; //选择文件按钮 JButton selectFile2; JButton copyButton; //拷贝按钮 JLabel label1,label2; JButton choose; JButton apply ; // 创建一键换色按钮 JButton change; Color color = Color.BLACK; public CopyFileDemo(){ super("拷贝文件演示"); //调用父类构造函数 setLayout(new BorderLayout()); JPanel panel = new JPanel(new GridLayout(5,4,10,10));//3行2列 水平间距20 垂直间距10 //创建ButtonGroup按钮组件 ButtonGroup group = new ButtonGroup(); //创建三个JRadioButton单选框 JRadioButton green = new JRadioButton("绿"); JRadioButton yellow = new JRadioButton("黄"); JRadioButton pink = new JRadioButton("粉"); //将单选框添加到同一个ButtonGroup按钮组件中 group.add(green); group.add(yellow); group.add(pink); //为单选按钮定义ActionListener监听器 ActionListener listener = new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub Color color = null; if (green.isSelected()) {//red红单选框是否被选中 color = Color.GREEN; } else if (yellow.isSelected()) {//yellow黄单选框是否被选中 color = Color.YELLOW; } else { color = Color.PINK; } panel.setBackground(color);//设置背景颜色 } }; //为三个单选添加监听器 green.addActionListener(listener); yellow.addActionListener(listener); pink.addActionListener(listener); //将复选框添加到JPanel面板 panel.add(green); panel.add(yellow); panel.add(pink); //JPanel panel = new JPanel(); fileChooser=new JFileChooser(); //实例化文件选择器 //Container container=getContentPane(); //得到容器 JFrame f = new JFrame(); String lookAndFeel = "com.sun.java.swing.plaf.motif.MotifLookAndFeel"; try { UIManager.setLookAndFeel(lookAndFeel); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (UnsupportedLookAndFeelException e) { e.printStackTrace(); } JPanel mainJP=new JPanel(new BorderLayout()); f.add(mainJP,BorderLayout.CENTER); JScrollPane jsp=new JScrollPane(panel,ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED ); mainJP.add(jsp,BorderLayout.CENTER); JPanel showMainJP=new JPanel(new FlowLayout()); showMainJP.setPreferredSize(new Dimension(800,150)); showMainJP.setBorder(BorderFactory.createTitledBorder("Motif风格")); //container.setLayout(null); choose = new JButton("选择颜色"); apply = new JButton("应用颜色"); // 创建一键换色按钮 change = new JButton("一键变色"); jtfSourceFile=new JTextField(16); jtfTargetFile=new JTextField(16); label1 = new JLabel("源 文 件"); label2= new JLabel("目标文件"); selectFile1=new JButton("选择"); selectFile2=new JButton("选择"); panel.add(label1); //增加组件到面板(panel)上 panel.add(jtfSourceFile); panel.add(selectFile1); panel.add(label2); //增加组件到面板(panel)上 panel.add(jtfTargetFile); panel.add(selectFile2); f.add(panel); //增加组件到容器上 apply.setEnabled(false); choose.addActionListener(e -> { try { color = JColorChooser.showDialog(f, "选择字体颜色", color); } catch (Exception ex) { ex.printStackTrace(); } // 应用按钮可用 apply.setEnabled(true); }); apply.addActionListener(e -> { label1.setForeground(color); label2.setForeground(color); }); change.addActionListener(e -> { JColorChooser colorChooser = new JColorChooser(); JDialog dialog = JColorChooser.createDialog(f, "请选择颜色", false, colorChooser, e1 -> label1.setForeground(colorChooser.getColor()), null); dialog.setVisible(true); }); change.addActionListener(e -> { JColorChooser colorChooser = new JColorChooser(); JDialog dialog = JColorChooser.createDialog(f, "请选择颜色", false, colorChooser, e1 -> label2.setForeground(colorChooser.getColor()), null); dialog.setVisible(true); }); panel.add(choose); panel.add(apply); panel.add(change); f.add(panel, BorderLayout.SOUTH); f.setVisible(true); copyButton=new JButton("拷贝"); panel.add(copyButton); f.add(panel); selectFile1.addActionListener(new SelectFileListener()); //设置选择文件的事件处理 selectFile2.addActionListener(new SelectFileListener()); copyButton.addActionListener(new ActionListener(){ //拷贝按钮事件处理 public void actionPerformed(ActionEvent event) { String sourceFile=jtfSourceFile.getText(); //得到源文件路径 String targetFile=jtfTargetFile.getText(); //得到目标文件路径 if (copy(sourceFile,targetFile)){ //拷贝文件 JOptionPane.showMessageDialog(CopyFileDemo.this,"拷贝成功"); //显示拷贝成功信息 } else{ JOptionPane.showMessageDialog(CopyFileDemo.this,"拷贝失败"); //发生错误 } } }); f.setSize(800,300); //设置窗口尺寸 f.setVisible(true); //设置窗口可视 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //关闭窗口时退出程序 } class SelectFileListener implements ActionListener { //取得目录内容的事件处理 public void actionPerformed(ActionEvent event) { if (fileChooser.showOpenDialog(CopyFileDemo.this)==JFileChooser.APPROVE_OPTION){ //弹出文件选择器,并判断是否点击了打开按钮 String fileName=fileChooser.getSelectedFile().getAbsolutePath(); //得到选择文件的绝对路径 if (event.getSource().equals(selectFile1)){ //判断事件来自于哪个按钮 jtfSourceFile.setText(fileName); //设置源文件路径 } else{ jtfTargetFile.setText(fileName); //设置目标文件路径 } } } } public boolean copy(String file1,String file2){ //拷贝文件方法 try{ java.io.File fileIn=new java.io.File(file1); //用路径名生成源文件 java.io.File fileOut=new java.io.File(file2); //用路径名生成目标文件 FileInputStream fin=new FileInputStream(fileIn); /