java实现图片文件复制功能

import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFileChooser;
import java.io.*;
import javax.swing.JOptionPane;
/**
*
* @author Administrator
*/
public class Copy extends javax.swing.JFrame {
String s;
File target;
File file;
         //;
    /** Creates new form Copy */
    public Copy(String s) {

        initComponents();

        this.s=s;//源文件路径;
       file=new File(s);
        if(s==null){
            jTextArea1.setText("你没有选择文件");
        }else
        jTextArea1.setText(s);

    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                         
    private void initComponents() {//建立GUI组件方法,可忽略;

        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jPanel1 = new javax.swing.JPanel();
        jButton1 = new javax.swing.JButton();
        jToggleButton1 = new javax.swing.JToggleButton();
        jLabel1 = new javax.swing.JLabel();
        jProgressBar1 = new javax.swing.JProgressBar();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("文件复制");

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jButton1.setText("选择目标文件");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jToggleButton1.setText("返回");
        jToggleButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jToggleButton1ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                        .addComponent(jButton1)
                        .addContainerGap())
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                        .addComponent(jToggleButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 96, Short.MAX_VALUE)
                        .addGap(19, 19, 19))))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(23, 23, 23)
                .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 38, Short.MAX_VALUE)
                .addComponent(jToggleButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE))
        );

        jLabel1.setText("复制源文件：");

        jProgressBar1.setForeground(new java.awt.Color(255, 51, 51));

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addGroup(layout.createSequentialGroup()
                                .addContainerGap()
                                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 89, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 317, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGap(131, 131, 131)
                        .addComponent(jProgressBar1, javax.swing.GroupLayout.DEFAULT_SIZE, 317, Short.MAX_VALUE)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 27, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(18, 18, 18)
                .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(19, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>                       

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        JFileChooser JFileCh=new JFileChooser();
        JFileCh.setFileSelectionMode(2);

       // JFileCh.showSaveDialog(this);
        String filepath=null;
        int returnVal=JFileCh.showSaveDialog(this);
        if(returnVal==JFileChooser.APPROVE_OPTION){
            target=JFileCh.getSelectedFile();
            filepath=target.getPath();
            System.out.println(filepath);
            File NewFile1=new File(target,file.getName());
      try {
            if (NewFile1.createNewFile()) {
                FileInputStream FileIn=new FileInputStream(s);//建立输入流
                DataInputStream in=new DataInputStream(FileIn);
                FileOutputStream fileout=new FileOutputStream(NewFile1);//定义输出流
                DataOutputStream out=new DataOutputStream(fileout);
                int c;
                while((c=in.read())!=-1)
                 out.write(c);
                in.close();
                out.close();
                JOptionPane.showMessageDialog(this,"文件复制成功:"+NewFile1.getPath());
            }
        } catch (IOException ex) {
            Logger.getLogger(Copy.class.getName()).log(Level.SEVERE, null, ex);
        }
        }
    }                                       

    private void jToggleButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                              
                    this.dispose(); // TODO add your handling code here:
    }                                             

    /**
    * @param args the command line arguments
    */
    /*public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Copy().setVisible(true);
            }
        });
    }*/

    // Variables declaration - do not modify                    
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JProgressBar jProgressBar1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JToggleButton jToggleButton1;
    // End of variables declaration                  

}