Java IO输入输出流 字符数组流 ByteArrayOutputStream/ByteArrayInputStream

private static void StringWriterAndReader() throws Exception {
		//字符串流（字符串的内存流）
		//字符串输入流
		StringWriter sWriter=new StringWriter();
		sWriter.write("文档在手，天下我有！");
		sWriter.write("吃得苦中苦，方为人上人！");
//		System.out.println(sWriter.toString());
		//字符串的输出流
		StringReader sReader=new StringReader(sWriter.toString());
		char[] buffer =new char[1024];
		int len=-1;
		while((len=sReader.read(buffer))!=-1){
			System.out.println(new String(buffer,0,len) );
		}
		sWriter.close();
                sReader.close();

	}

	private static void charArray() throws IOException {
		//字符数组流/内存流
		//字符数组输出流：程序----->内存
		CharArrayWriter writer =new CharArrayWriter();
		writer.write("欢迎学习Java！");
		char[] content=writer.toCharArray();
		//字节数组输入流：内存----->程序
		CharArrayReader reader=new CharArrayReader(content);
		int len=-1;
		char[] ch=new char[1024];
		while((len=reader.read(ch))!=-1){
			System.out.println(new String(ch,0,len));
		}
		writer.close();
		reader.close();
	}

	private static void byteArray() throws Exception {
		//字节数组流/内存流
		//字节数组输出流：程序----->内存
		ByteArrayOutputStream out=new ByteArrayOutputStream();
		out.write("大家好啊！".getBytes());
		byte[] bye=out.toByteArray();
		//字节数组输入流：内存----->程序
		ByteArrayInputStream in=new ByteArrayInputStream(bye);
		byte[] buffer=new byte[1024];
		int len=-1;
		while((len=in.read(buffer))!=-1){
			System.out.println(new String(buffer,0,len));
		}
		out.close();
		in.close();
	}

合并流（SequenceInputStream）

//创建顺序流对象
		SequenceInputStream in=	new SequenceInputStream(new FileInputStream("file/copy.txt"), new FileInputStream("file/copy12.txt"));
		byte[] buffer=new byte[1024];
		int len=-1;
		while((len=in.read(buffer))!=-1){
			System.out.println(new String(buffer,0,len));
		}
		in.close();