java - 如何获取文件夹的父文件夹

Question

假设我们有：

String path = "D:\aaa\bbb\ccc"

我想知道是否有一个功能可以快速修改path为：

D:\aaa\bbb\或者D:\aaa\

我尝试使用没有运气的路径：

path = "D:\\aaa\\bbb\\ccc";
pathNew = java.nio.file.Paths.get(path).subpath(0,2).toString();
println "${pathNew}"

给出下一个控制台结果：

aaa\bbb

Answer 1

你可以做：

String path = "D:\\aaa\\bbb\\ccc";
File parent = new File(path).getParentFile();
System.out.println(parent);

String parentStr = new File(path).getParent();
System.out.println(parentStr);

印刷：

D:\aaa\bbb
D:\aaa\bbb

Answer 2

你可以这样做：

Path p1 = Paths.get("D:\\aaa\\bbb\\ccc");
Path p2 = p1.getParent();
....

Answer 3

File file = new File("D:\\aaa\\bbb\\ccc");
File parent = file.getParent();

System.out.println(parent);

Answer 4

尝试这个

  Path path = Paths.get("your path");
  Path parentPath = path.getParent();

Answer 5

File path = new File("D:\aaa\bbb\ccc");
path.getParentFile();  // Returns "D:\aaa\bbb\"
path.getParentFile().getParentFile();  // Returns D:\aaa\"

Answer 6

File parent = new File("D:\\aaa\\bbb\\ccc").getParent();
System.out.println(parent);