The following example demonstrates the use of the oldName.renameTo(newName) method of the File class to rename a file:
/*
author by w3cschool.cc
Main.java
*/import java.io.File;public class Main {
public static void main(String[] args) {
File oldName = new File("C:/program.txt");
File newName = new File("C:/java.txt");
if(oldName.renameTo(newName)) {
System.out.println("已重命名");
} else {
System.out.println("Error");
}
}}The output result of the above code is (before executing the program, you can Create program.txt file):
已重命名
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