1. 获取文件3.txt:
A、相对路径:从src开始写起
//里面路径写成:3.txt报错:java.io.FileNotFoundException: 3.txt (系统找不到指定的文件。) FileInputStream in = new FileInputStream( "src\\3.txt");
B、绝对路径:
String path = new File("").getCanonicalPath()+ "\\src\\"; System.out.println("path: " + path);//path: E:\programfiles\idea\testboot\src\ FileReader reader = new FileReader(path + "3.txt");
2. 获取文件1.txt
InputStream in3 = new FileInputStream("1.txt");