In my last post I have given an idea about How to change font of JLabel.
Here, I have shared Reading a text file and search any specific word from that.
Sometimes we may need to search any specific word from a text file. For this, we need to know how to read a text file using java.
Here I have given a simple way, just read a text file and find out the search keyword, after finding out the search key word it will be shown on which line the searched keyword was found.
** It will give you just a basic idea.
Click Here to download the Code+Reader1.txt to test yourself.
Code Example:
import java.io.*;
import java.util.*;
class filereader
{
public static void main(String args[]) throws Exception
{
int tokencount;
FileReader fr=new FileReader(“reader1.txt”);
BufferedReader br=new BufferedReader(fr);
String s;
int linecount=0;
String line;
String words[]=new String[500];
while ((s=br.readLine())!=null)
{
linecount++;
int indexfound=s.indexOf(“see”);
if (indexfound>-1)
{
System.out.println(“\n”);
System.out.println(“Word was found at position::” +indexfound+ “::on line”+linecount);
System.out.println(“\n”);
line=s;
System.out.println(line);
int idx=0;
StringTokenizer st= new StringTokenizer(line);
tokencount= st.countTokens();
System.out.println(“\n”);
System.out.println(“Number of tokens found” +tokencount); System.out.println(“\n”);
for (idx=0;idx<tokencount;idx++) {
words[idx]=st.nextToken();
System.out.println(words[idx]);
}
}
}
fr.close();
}
}
OUTPUT:
All About Basic 