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how to rename filename by using File API?SOS
来源: 互联网 发布时间:2015-10-07
本文导语: in java.io.File, there is a method named rename(File newFile), but write some code to execute it, find some problem.code as follows: import java.io.*; public class MakeDirectories { private final static String usage = "Usage:MakeDirectories path1 ...n" ...
in java.io.File, there is a method named rename(File newFile),
but write some code to execute it, find some problem.code as follows:
import java.io.*;
public class MakeDirectories {
private final static String usage =
"Usage:MakeDirectories path1 ...n" +
"Creates each pathn" +
"Usage:MakeDirectories -d path1 ...n" +
"Deletes each pathn" +
"Usage:MakeDirectories -r path1 path2n" +
"Renames from path1 to path2n";
private static void usage() {
System.err.println(usage);
System.exit(1);
}
private static void fileData(File f) {
System.out.println(
"Absolute path: " + f.getAbsolutePath() +
"n Can read: " + f.canRead() +
"n Can write: " + f.canWrite() +
"n getName: " + f.getName() +
"n getParent: " + f.getParent() +
"n getPath: " + f.getPath() +
"n length: " + f.length() +
"n lastModified: " + f.lastModified());
if(f.isFile())
System.out.println("it's a file");
else if(f.isDirectory())
System.out.println("it's a directory");
}
public static void main(String[] args) {
if(args.length
but write some code to execute it, find some problem.code as follows:
import java.io.*;
public class MakeDirectories {
private final static String usage =
"Usage:MakeDirectories path1 ...n" +
"Creates each pathn" +
"Usage:MakeDirectories -d path1 ...n" +
"Deletes each pathn" +
"Usage:MakeDirectories -r path1 path2n" +
"Renames from path1 to path2n";
private static void usage() {
System.err.println(usage);
System.exit(1);
}
private static void fileData(File f) {
System.out.println(
"Absolute path: " + f.getAbsolutePath() +
"n Can read: " + f.canRead() +
"n Can write: " + f.canWrite() +
"n getName: " + f.getName() +
"n getParent: " + f.getParent() +
"n getPath: " + f.getPath() +
"n length: " + f.length() +
"n lastModified: " + f.lastModified());
if(f.isFile())
System.out.println("it's a file");
else if(f.isDirectory())
System.out.println("it's a directory");
}
public static void main(String[] args) {
if(args.length
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本站(WWW.)站内文章除注明原创外,均为转载、整理或搜集自网络。欢迎任何形式的转载,转载请注明出处。