进阶day10-打印流的基本使用(PrintStream)(了解)
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javaSE-day10/src/com/inmind/printstream_04/Demo14.java
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32
javaSE-day10/src/com/inmind/printstream_04/Demo14.java
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package com.inmind.printstream_04;
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import java.io.FileNotFoundException;
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import java.io.PrintStream;
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/*
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打印流的基本使用(PrintStream)(了解)
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构造方法
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PrintStream(String fileName) 使用指定的文件名创建新的打印流,无需自动换行
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常用方法:
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print():直接输出内容,但不换行
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println():直接输出内容,但换行
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*/
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public class Demo14 {
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//修改掉sout的打印位置
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public static void main(String[] args) throws FileNotFoundException {
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PrintStream ps = new PrintStream("dest.txt");
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System.setOut(ps);//修改了系统级别的打印位置
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System.out.println("这是修改了系统级别的打印位置后的sout");
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}
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//打印流的基本使用
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public static void method(String[] args) throws FileNotFoundException {
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//往相对路径dest.txt中打印字符串
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PrintStream ps = new PrintStream("dest.txt");
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ps.println("你好java");
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ps.print("helloworld");
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System.out.println("你好java");
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ps.close();
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}
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}
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