运用线程池来查找含有指定字符的文件

package threadPool;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/**

 * @author 刘建雯
   */

public class FileSearching {
  	public static void main(String[] args) {
    	Scanner scanner = new Scanner(System.in);
        System.out.println("[ Please input path ]");
        String path = scanner.nextLine();
        System.out.println("[ Please input end words ]");
        String endWords = scanner.nextLine();
        System.out.println("[ Please input the special words you wanna find ]");
        String specialWords = scanner.nextLine();
        FileSearching fileSearching = new FileSearching();
        fileSearching.fileSearch(path,endWords,specialWords);
	}

        private static int count = 0;
        private ThreadPoolExecutor threadPool = new ThreadPoolExecutor(10,20,30, TimeUnit.SECONDS, new LinkedBlockingQueue<>());

        public void fileSearch(String path, String endStr, String specialStr){
            File filePath = new File(path);
            if(!filePath.exists()){
                System.out.println("[warning] file not exist");
                return;
            }
            if(!filePath.isDirectory()){
                if(filePath.getName().endsWith(endStr)){
                    threadPool.execute(() -> {
                        try {
                            char[] content = new char[(int)filePath.length()];
                            FileReader fileReader = new FileReader(filePath);
                            fileReader.read(content);
                            if(String.valueOf(content).contains(specialStr)){
                                System.out.println("[file found] "+filePath.getAbsolutePath());
                                FileSearching.countUp();
                            }
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    });
                }
            }else{
                File[] files = filePath.listFiles();
                assert files != null;
                for(File file:files){
                    fileSearch(file.getAbsolutePath(),endStr,specialStr);
                }
            }
            System.out.println("find "+count+" files end with "+endStr+" and contain \""+specialStr+"\"");
        }

        private static void countUp(){
            count++;
        }
    
    }