package com.shaonaiyi.local;
import java.io.File;
import java.io.FileOutputStream;
/**
 * Java实现本地写文件
 */
public class WriteFile {
    public static void main(String[] args) throws Exception{
        String path = "/Users/shaonaiyi/datas/tmp/hello.txt";
        //win系统
//        String path = "c:\\hello.txt";
        File file = new File(path);
        String content = "hello,shaonaiyi.\n";
        FileOutputStream fileOutputStream = new FileOutputStream(file);
        fileOutputStream.write(content.getBytes());
        fileOutputStream.close();
    }
}

package com.shaonaiyi.local;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
/**
 * Java实现本地读文件
 */
public class ReadFile {
    public static void main(String[] args) throws Exception{
        String path = "/Users/shaonaiyi/datas/tmp/hello.txt";
        //win系统
//        String path = "c:\\hello.txt";
        FileInputStream fileInputStream = new FileInputStream(path);
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(fileInputStream));
        String line = null;
        while ((line = bufferedReader.readLine()) != null) {
            System.out.println(line);
        }
        fileInputStream.close();
    }
}