package course; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; /** * @author WanJl * @version 1.0 * @title FileReaderTest * @description * @create 2026/8/7 */ public class FileReaderTest { public static void main(String[] args) throws IOException { FileReader fr=new FileReader("D:/abc.txt"); //read () 读取一个字符 // int ch; // while ((ch=fr.read())!=-1){ // System.out.print((char) ch); // } //read (char[] c, int off, int len) 读取一部分字符数组 char[] chars=new char[1024]; int count; while ((count=fr.read(chars))!=-1){ System.out.print(new String(chars,0,count)); } //释放资源 fr.close(); } }