Write a java program that will copy all the words starting with vowel from a file and stores those words to another file separated by spaces

I wanted to write a java program that will copy all the words starting with a vowel from a file and store those words in another file separated by spaces to out.txt file. my code working only for the last word from the loop.

package findvowelwords;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class FindVowelWords {
    public static void main(String[] args) throws IOException 
   {
      File f1=new File("input.txt"); //Creation of File Descriptor for input file
      String[] words=null;    //Intialize the word Array
      FileReader fr = new FileReader(f1);    //Creation of File Reader object
      BufferedReader br = new BufferedReader(fr);   //Creation of BufferedReader object
      String s;
      int flag=0;  //Intialize the flag variable
      while((s=br.readLine())!=null)
      {
         words=s.split(" ");   //Split the word using space
         for(int i=0;i<words.length;i++)
         {
            for(int j=0;j<words[i].length();j++)
            {
               char ch=words[i].charAt(j);   //Read the word char by char
               if(ch == 'a' || ch == 'e' || ch == 'i' ||ch == 'o' || ch == 'u')   //Checking for vowels
               {
                      flag=1; //If vowels persent set flag as one 
                }
                break;
            }
           
            if(flag==1)
            {
               System.out.println(words[i]);  //Print the vowels word
                          
               try
                    {  
                        FileWriter fw = new FileWriter("out.txt");  
                        fw.write(words[i]);  
                        fw.close();  
                    }
                    catch(Exception e)
                    {
                        System.out.print("Error : "+e);
                    }
            }
            flag=0;          
         }
    }
}
}

I have to transfer the words from words[I] to a global string variable and then I have to input the string to fw.write(Here);.

But I failed to do that. Also, I know the Try code I have to write out of the while loop I tried many times but failed.

try
{  
     FileWriter fw = new FileWriter("out.txt");  
     fw.write(words[i]);  
     fw.close();  
 }
 catch(Exception e)
 {
     System.out.print("Error : "+e);
  }

My current file’s output:

Compile Output is:

Out.txt file should like this

Please, can you help me with this??

>Solution :

You are opening the file in in write mode. you have to open the file in append mode.

Solution:
Change FileWriter fw = new FileWriter("out.txt");
To: FileWriter fw = new FileWriter("out.txt", true);

Read this:
FileWriter(String fileName, boolean append)