J250511/01-JavaSE阶段代码/J20250725/Demo09_FileReader.java

package J20250725;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

/**
 * @author WanJl
 * @version 1.0
 * @title Demo09_FileReader
 * @description
 * @create 2025/7/25
 */
public class Demo09_FileReader {
    public static void main(String[] args) throws IOException {
        FileReader fr=new FileReader("D:/我的文件.txt");
        int ch;
//        while ((ch=fr.read())!=-1){
//            System.out.print((char)ch);
//        }
        char[] chars=new char[1024];
        int length;
        while ((length=fr.read(chars))!=-1){
            System.out.println(new String(chars,0,length));
        }

        fr.close();
    }
}