jdk 1.7系列 （二）文件 I/O 的基石 ：Path

package com.gudongcheng.jdk7.nio;

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

/**
 * @author lizuoyang
 * @date 2018/10/30
 * @desc Path类的用法
 */
public class PathDemo {
    public static void main(String[] args) {
        //创建绝对路径
        Path demo = Paths.get("/usr/bin/zip");

        //获取文件名
        System.out.println("File Name :" + demo.getFileName());

        //获取名称元素的数量
        System.out.println("Number of Name Elements:" + demo.getNameCount());

        //获取root路径（顶层）
        System.out.println("Root of Path:" + demo.getRoot());

        //获取0-2位子路径
        System.out.println("Subpath from Root, 2 elements deep:" + demo.subpath(0, 2));

        //去除冗余路径 获取文件的真正位置
        Path normalizedPath = Paths.get("./PathDemo.java").normalize();
        System.out.println("Path normalizedPath:" + normalizedPath);

        //合并两个Path 通过resolve()
        Path prefix = Paths.get("/uat");
        Path completePath = prefix.resolve("conf/application.properties");
        System.out.println("Path resolve :" + completePath.toAbsolutePath());

        //File类和Path类的相互转换
        File file = new File("../demo.java");
        //File to Path
        Path file2Path = file.toPath();
        System.out.println("File to Path:" + file2Path.toAbsolutePath());

        //Path to File
        File path2File = file2Path.toFile();
        System.out.println("Path to File:" + path2File.getPath());
    }
}