import java.awt.Component;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.swing.JOptionPane;
import javax.swing.ProgressMonitorInputStream;
public class buckUpFile {
private Component parentComponent;
public void copyFile() {
File srcFolder = new File(
"C:\\Users\\ALLEN\\Workspace\\FINAL_LCTP_WORKBENCE_1.5");
File destFolder = new File(
"C:\\Data Programing\\COPY_OF_FINAL_LCTP_WORKBENCE_1.5");
if (!srcFolder.exists()) {
JOptionPane.showMessageDialog(null, "Directory does not exist.");
System.exit(0);
} else {
try {
copyFolder(srcFolder, destFolder);
} catch (IOException e) {
e.printStackTrace();
System.exit(0);
}
}
JOptionPane.showMessageDialog(null,
"Back up request has been completed");
}
public void copyFolder(File src, File dest) throws IOException {
if (src.isDirectory()) {
if (!dest.exists()) {
dest.mkdir();
}
String files[] = src.list();
for (String file : files) {
File srcFile = new File(src, file);
File destFile = new File(dest, file);
copyFolder(srcFile, destFile);
}
} else {
InputStream in = new BufferedInputStream(
new ProgressMonitorInputStream(parentComponent, "Reading "
+ src, new FileInputStream(src)));
OutputStream out = new FileOutputStream(dest);
byte[] buffer = new byte[1024];
int length;
while ((length = in.read(buffer)) > 0) {
out.write(buffer, 0, length);
}
in.close();
out.close();
}
}
}
我上面的代码工作得很好,它允许我将文件的数据从一个目录复制到另一个目录。我的问题是,如何创建进度条?我可以附加到我的代码中,以使我的程序更加用户友好。我尝试使用 ProgressMonitorInputStream 但看起来我走错了路。