2.2.2 从 Path 中获取信息

Demo:

import java.nio.file.Path;
import java.nio.file.Paths;

public class PathInfoTest {

    public static void main(String[] args) {

        // 创建绝对路径（位置）
        Path listing = Paths.get("/Users/jinxing/Documents/pathtest");

        System.out.println("File Name: " +
                // 位置（文件）名称
                listing.getFileName());

        System.out.println("Number of Name Elements in the Path: " +
                // （位置）路径层级 / 元素数量
                listing.getNameCount());

        System.out.println("Parent Path: " +
                // 上级位置 / 上级文件路径
                listing.getParent());

        System.out.println("Root of Path: " +
                // 跟位置（路径）
                listing.getRoot());

        System.out.println("Subpath from Root,2 elements deep: " +
                // 截断路径——从第1个反斜杠开始截取到第3个反斜杠——反斜杠计数从0开始——结果不包含头尾反斜杠
                // /Users/jinxing/Documents/pathtest --> jinxing/Documents
                listing.subpath(1, 3));

    }

}

Ran As Java Application:

File Name: pathtest
Number of Name Elements in the Path: 4
Parent Path: /Users/jinxing/Documents
Root of Path: /
Subpath from Root,2 elements deep: jinxing/Documents