Java 操作 资料 File

写文件

public static void stream(String  path) throws FileNotFoundException, IOException {  
        Long startTime = System.currentTimeMillis();  
        BufferedReader reader = getReader(new File(path));  
  
        String line; 
  
        while ((line = reader.readLine()) != null) {  
            // 空转  
        	System.out.println(line);
        	
        }  
        Long estimatedTime = System.currentTimeMillis() - startTime;  
        System.out.printf("stream Diff: %d ms\n", estimatedTime);  
  
    } 

读文件

	public static void stream(String file) throws FileNotFoundException, IOException {  
        Long startTime = System.currentTimeMillis();  
        BufferedReader reader = getReader(new File(path));  
  
        String line; 
       
        while ((line = reader.readLine()) != null) {  
            // 空转  
        	System.out.println(line);
         
        }  
        Long estimatedTime = System.currentTimeMillis() - startTime;  
        System.out.printf("stream Diff: %d ms\n", estimatedTime);  
  
    } 

 public static BufferedReader getReader(File f) throws FileNotFoundException, IOException {  
        BufferedReader reader = null;  
        if (f.getName().endsWith(".gz")) {  
            reader = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(f))));  
        } else {  
            reader = new BufferedReader(new InputStreamReader(new FileInputStream(f)));  
        }  
        return reader;  
    }