io流操作之文件重命名代码

import java.io.File;

public class TestFile {
public static void main(String[] args){

File file1 = new File("D:\\io\\helloworld.txt");
System.out.println(file1.getAbsoluteFile());
File file2 = new File("D:\\io\\hello2.txt");
//rename()方法要求file1一定存在，file2一定不存在
Boolean b = file1.renameTo(file2);
System.out.println(b);

}
}