FileInputStream 讀取文件的絕對路徑和相對路徑

FileInputStream 讀取文件的絕對路徑和相對路徑

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public class InOutDemo {       public static void main(String[] args) throws Exception {         System.out.println(new File(".").getAbsolutePath());         InputStream is = new FileInputStream("g:\\1.txt");         //InputStream is = new FileInputStream(".\\src\\cn\\linson\\io\\2.txt");         //InputStream is = new FileInputStream(".\\config.properties");         int len = 0;         byte[] b = new byte[10];         while((len = is.read(b))!= -1){             for(byte bb:b){                 System.out.print((char)bb+" ");             }         }     } }

1，絕對路徑

2，相對路徑 2.txt在包下

3，config文件在工程根目錄下