File in a folder and have specific sentence

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i have this program and i want it to find a file not a directory and then search a specific sentence in it and print the name of the file
and i wrote this code and it has FileNotFoundException

C#

public static void main(String[] args)  throws FileNotFoundException{
       // TODO code application logic here
       File file=new File("/Users/amoona/Desktop/MyDir");
 File[] matches = file.listFiles();

  
     for(int i=0;i<file.length();i++){
          Scanner sc=new Scanner (matches[i]);
         if (matches[i].isFile()==true){
              System.out.println("It Is A File");
              while(sc.hasNext()){
              String s=sc.next();

             if ("King AbdulAziz University".equalsIgnoreCase(s)){
                  System.out.println(matches[i].getName());
             }}
           }
       }


   }

What I have tried:

i tried the code above but it has
It Is A File
Exception in thread "main" java.io.FileNotFoundException: /Users/amoona/Desktop/MyDir/Dir1 (Is a directory)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.util.Scanner.<init>(Scanner.java:611)
at lab4.Lab4.main(Lab4.java:38)
/Users/amoona/Library/Caches/NetBeans/8.1/executor-snippets/run.xml:53: Java returned: 1
BUILD FAILED (total time: 0 seconds)

Posted 25-Mar-16 3:36am

Member 11510255

Updated 25-Mar-16 14:28pm

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Richard MacCutchan · Answer 1 · 2016-03-25T06:17:00

You have an error in your code, so it is trying to process more entries than are returned from the call to listFiles. You should also test for the directory before creating the Scanner object, thus:

Java

public static void main(String[] args)  throws FileNotFoundException{
    // TODO code application logic here
    File file=new File("/Users/amoona/Desktop/MyDir");
    File[] matches = file.listFiles();
    
    
    for(int i=0;i        if (matches[i].isFile()==true){
            // skip this code if entry is a directory
            System.out.println("It Is A File");
            Scanner sc=new Scanner (matches[i]);
            while(sc.hasNext()){
                String s=sc.next();
                
                if ("King AbdulAziz University".equalsIgnoreCase(s)){
                    System.out.println(matches[i].getName());
                }
            }
        }
    }
}

You could also simplify your for loop by using a foreach, thus:

Java

for(File ff : matches){

and use ff in place of matches[i].