java如何给字段重命名 java如何重命名一个文件

给定一个文件，然后对文件重命名。

要重命名文件名，需要使用 renameTo() 方法，这是 File 类的方法。 在这里，可以使用语句 File F = new File(“ f：/Includehelp.txt”); 来创建 File 类的对象。

代码如下：

import java.io.File;
importjava.io.IOException;
public class RenameFile
{
public static void main(String[] args)
{
try
// Here F is the object of the Existing file named with Includehelp which is to be renamed. //
{
File F=new File("f:/Includehelp.txt");
// Here T is the object of the renamed file of Includehelp which is Include.txt. //
File T=new File ("f:/Include.txt");
// Rename the file Includehelp.txt into Include.txt. //
F.renameTo(T);
// Print the result if file renamed. //
System.out.println("File Rename Successfully...");
}
// If any error occurs while renaming the file. //
catch(Exception e)
{
System.out.println(e);
}
}
}

输出：

File Rename Successfully...