Java 之文件目录操作

1、判断文件是否存在

    File file = new File("d:\study\temp\test.java");
    boolean bl = file.exists();

2、更名文件名

    File srcFile = new File("d:\study\temp\test.javav");
    File desFile = new File("d:\study\temp\testnew.java");
    boolean bln = srcFile.renameTo(desFile);

3、删除文件

File file = new File("d:\study\temp\test.java");
    boolean bl = file.exists();
    if(file.exists()) 
    {
        bl = file.delete();
    }

4、创建目录

file.mkdir();