下面是一个比较简单的文件复制器
1.复制的具体实现方法
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
/**
* 指定位置的文件复制到指定位置.
* @author Administrator
*
*/
public class fileCopy {
// 文件复制的方法
public void copyFile(String scrPath, String desPath) {
// 如果路径正确,得到源文件以及目标文件
try {
FileInputStream fis = new FileInputStream(scrPath);
FileOutputStream fos = new FileOutputStream(desPath);
//读取文件,并将读取到的数据直接写入磁盘.
try {
int read = fis.read();
while (read != -1) {
//将读取的数据直接写到磁盘当中
fos.write((byte)read);
read = fis.read();
}
//关闭流
fis.close();
//保证数据能完整写入到磁盘当中
fos.flush();
//关闭流
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
2.界面
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
public class fileCopyUI extends JFrame{
public static void main(String args[]){
fileCopyUI ui = new fileCopyUI();
ui.showUI();
}
public void showUI(){
this.setTitle("文件复制器");
this.setSize(300,125);
JButton but = new JButton("复制");
JLabel jl = new JLabel(" 源文件:");
JTextField jf = new JTextField(20);
JLabel jl1 = new JLabel("目标文件:");
JTextField jf1 = new JTextField(20);
this.add(jl);
this.add(jf);
this.add(jl1);
this.add(jf1);
this.add(but);
this.setLayout(new FlowLayout());
this.setLocationRelativeTo(null); //居中显示
this.setResizable(false);//不可改变大小
this.setDefaultCloseOperation(EXIT_ON_CLOSE);//关闭界面时推出程序
this.setVisible(true);//显示界面
ActionListenerImpl l = new ActionListenerImpl(jf,jf1);
but.addActionListener(l);
}
}
3.监听器
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JTextField;
public class ActionListenerImpl implements ActionListener {
private JTextField jf;
private JTextField jf1;
// 获取文件指定的路径和关键字
public ActionListenerImpl(JTextField jf, JTextField jf1) {
this.jf = jf;
this.jf1 = jf1;
}
public void actionPerformed(ActionEvent e) {
JButton but = (JButton)e.getSource();
if(but.getText().equals("复制")){
fileCopy fc = new fileCopy();
fc.copyFile(jf.getText(), jf1.getText());
}
}
}

