JAVA文件输入输出流InputStream，OutputStream

import sun.java2d.pipe.OutlineTextRenderer;

import java.io.*;

public class FileStreamTest {
    public static void main(String[] args) throws IOException {

        //以下两种路径表达格式都可以,需要读取的文件路径
        String filePath = "C:\\Users\\Administrator\\Desktop\\mysqlInstall.txt";
//        String filePath = "C:/Users/Administrator/Desktop/mysqlInstall.txt";
        String fileCopyPath = "C:\\Users\\Administrator\\Desktop\\copyMysqlInstall.txt";
        File file = new File(filePath);
        File fileCopy = new File(fileCopyPath);
        if (!file.exists()) {
            System.out.println("不存在当前路径！！！");
        }
        if (!fileCopy.exists()) {
            System.out.println("创建一个文件！！！");
        }

        //输出到控制台打印
        InputStream is = new FileInputStream(file);
        InputStreamReader isr = new InputStreamReader(is, "UTF-8");
        StringBuilder sb = new StringBuilder();
        while (isr.ready()) {
            sb.append((char) isr.read());   //将二进制文件转化为char再追加传给stringbuffer
        }
        System.out.println(String.valueOf(sb));
        isr.close();
        is.close();

        //将文件内容copy到拷贝路径下
        OutputStream os = new FileOutputStream(fileCopy);
        OutputStreamWriter osw = new OutputStreamWriter(os, "UTF-8");
        osw.write(String.valueOf(sb));
        osw.flush();
        osw.close();
        os.close();
    }
}