java/file.getCanonicalFile()对比file.getAbsolutePath()

file.getCanonicalFile()获取标准路径，
file.getAbsolutePath()获取绝对路径，把new File(“path”)包含进去

package com.xcrj.path;

import java.io.File;
import java.io.IOException;

public class PathMain {

    public static void main(String[] args) throws IOException {
        // 设置为当前文件夹
        File file = new File("");
        // 标准路径，G:micro-servicespringbootbasic
        System.out.println(file.getCanonicalFile());
        // 绝对路径，G:micro-servicespringbootbasic
        System.out.println(file.getAbsolutePath());

        File file1 = new File("xcrj");
        // 标准路径，G:micro-servicespringbootbasicxcrj
        System.out.println(file1.getCanonicalFile());
        // 绝对路径，G:micro-servicespringbootbasicxcrj
        System.out.println(file1.getAbsolutePath());
        // xcrj
        System.out.println(file1.getPath());
		
		// .代表当前路径
        File file2 = new File(".");
        // 标准路径，G:micro-servicespringbootbasic
        System.out.println(file2.getCanonicalFile());
        // 绝对路径，G:micro-servicespringbootbasic.
        System.out.println(file2.getAbsolutePath());
        // .
        System.out.println(file2.getPath());
		
		// .. 代表上1个路径
        File file3 = new File("..");
        // 标准路径，G:micro-service
        System.out.println(file3.getCanonicalFile());
        // 绝对路径，G:micro-servicespringbootbasic.。
        System.out.println(file3.getAbsolutePath());
        // .。
        System.out.println(file3.getPath());
    }
}