Java基础之转换流

痛定思痛。 2022-12-16 03:58 182阅读 0赞

package cn.itcast.io.p1.transstream.demo;
    
    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.io.OutputStreamWriter;
    
    public class TransStreamDemo {
        
    
    	/**
    	 * @param args
    	 * @throws IOException 
    	 */
    	public static void main(String[] args) throws IOException {
        
    
    		//字节流。 
    		InputStream in = System.in;
    //		int ch = in.read();
    //		System.out.println(ch);
    //		int ch1 = in.read();
    //		System.out.println(ch1);
    		
    		//将字节转成字符的桥梁。装换流。 
    		InputStreamReader isr = new InputStreamReader(in);
    		
    //		int ch = isr.read();
    //		System.out.println((char)ch);
    		
    		//字符流。
    		BufferedReader bufr = new BufferedReader(isr);
    		
    		OutputStream out = System.out;
    		
    		OutputStreamWriter osw = new OutputStreamWriter(out);
    		
    		BufferedWriter  bufw = new BufferedWriter(osw);
    		
    		
    		
    		String line = null;
    		
    		while((line=bufr.readLine())!=null){
        
    			if("over".equals(line))
    				break;
    //			System.out.println(line.toUpperCase());
    //			osw.write(line.toUpperCase()+"\r\n");
    //			osw.flush();
    			
    			bufw.write(line.toUpperCase());
    			bufw.newLine();
    			bufw.flush();
    		}
    		
    		
    	}
    
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg1MzY2OQ_size_16_color_FFFFFF_t_70_pic_center_pic_center]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg1MzY2OQ_size_16_color_FFFFFF_t_70_pic_center_pic_center]: /images/20221123/e4c65d5f4d204e2bafd40837acbb26a8.png