目标：

搜索盘符下面符合要求的文件名，并可以选择是否打开该文件

代码：

import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;public class findQQ {public static void main(String[] args) {Scanner sc = new Scanner(System.in);File D = new File("D:");    //要搜索的磁盘File[] files = D.listFiles();System.out.println("请输入要查找的文件名：");String filename = sc.next();Arrays.stream(files).forEach(f -> new Find() {@Overridepublic void Find_QQ(File file, String fileName){if (file.isFile()) {if (file.getName().equals(fileName)) {System.out.println(file.getAbsolutePath());System.out.println("是否启动？(y/n)");if(sc.next().equals("y")){try {Runtime.getRuntime().exec(new String[] {"cmd","/c",file.getAbsolutePath()});} catch (IOException e) {e.printStackTrace();}}System.out.println("是否继续搜索？(y/n)");if(sc.next().equals("n")) {System.exit(0);}}}if (file.isDirectory()) {File[] files1 = file.listFiles();if (files1 != null && files1.length > 0) {for (File f : files1) {Find_QQ(f,fileName);}}}}}.Find_QQ(f,filename));System.out.println("没有找到该名称的文件！");}
}interface Find{void Find_QQ(File file,String fileName) throws IOException, InterruptedException;
}

运行结果：