Java输入一个文件名和一个字符串，判断该文件中是否存在该字符串，如果存在，输入该字符串所在的行数

字符串，判断该文件中是否存在该字符串，如果存在，输入该字符串所在的行数"/>

Java输入一个文件名和一个字符串，判断该文件中是否存在该字符串，如果存在，输入该字符串所在的行数

package demo1;import java.io.*;
import java.util.Scanner;public class MyClass1
{String encoding = "UTF-8";public static void main(String[] args) throws IOException {Scanner input=new Scanner(System.in);System.out.println("请输入文件路径：");String path=input.nextLine();System.out.println("请输入子字符串：");String subString=input.nextLine();findStringInFile(path,subString);}public static void findStringInFile(String path,String subString) throws IOException{File file = new File(path);InputStreamReader read = new InputStreamReader(new FileInputStream(file),"UTF-8");BufferedReader bufferedReader = new BufferedReader(read);String line = null;int count=0;while ((line = bufferedReader.readLine()) != null) {            count++;//指定字符串判断处if (line.contains(subString)) {System.out.println("子字符串在第"+count+"行：");System.out.println(line);}}}}