package com.demo;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

public class SystemOutTest {

	public static void outTest() {
		ByteArrayOutputStream baoStream = new ByteArrayOutputStream(1024);
		PrintStream cacheStream = new PrintStream(baoStream);// 临时输出
		PrintStream oldStream = System.out;// 缓存系统输出
		System.setOut(cacheStream);
		System.out.print("控制台打印信息测试...");// 不会打印到控制台
		String message = baoStream.toString();
		System.setOut(oldStream);// 还原到系统输出
		System.out.println("获取到的数据为【" + message + "】");
	}

	public static void main(String[] args) {
		outTest();
	}

}