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  • java学习_File简单的txt读取写入

    File  file=new File("newhello.txt");
    		if(file.exists()&&file.isFile())
    		{
    			try {
    				//创建文件输入流
    				FileInputStream fis=new FileInputStream(file);
    				//文件输入流读取
    				InputStreamReader isr=new InputStreamReader(fis);
    				//创建带有缓冲的读取流
    				BufferedReader br=new BufferedReader(isr);
    				String lineString;
    				while ((lineString=br.readLine())!=null) {
    					System.out.println(lineString);
    				}
    				System.out.println("读取完成");
    				br.close();
    				isr.close();
    				fis.close();
    				
    				File  file2=new File("newhello2.txt");
    				FileOutputStream fos=new FileOutputStream(file2);
    				OutputStreamWriter osWriter=new OutputStreamWriter(fos);
    				BufferedWriter bw=new BufferedWriter(osWriter);
    				bw.write("你麻痹啊
    ");
    				bw.write("你2麻痹啊
    ");
    				bw.write("你3麻痹啊
    ");
    				bw.close();
    				osWriter.close();
    				fos.close();
    				
    				
    			} catch (FileNotFoundException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			} catch (IOException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    			
    		}
    

      

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  • 原文地址:https://www.cnblogs.com/fanmiao/p/4920402.html
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