I have a problem in substring

Question

I want to read from a file.The file contain strings like
Cpu(s): 0.7% us, 0.7% sy, 0.0% ni, 98.3% id, 0.0% wa, 0.3% hi, 0.0% si
I want to take the value 0.7 from the file.
so I use substring(9,12) a pgm
import java.io.*;
class FileRead
public static void main(String args[])
try{
// Open the file that is the first
// command line parameter
FileInputStream fstream = new FileInputStream("C:\\abc.txt");
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine=null;
     //String ss;
//Read File Line By Line
while ((strLine = br.readLine()) != null) {
// Print the content on the console
System.out.println(strLine.sustring(9,12));
//Close the input stream
in.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
But it shows an error message
Error: String index out of range: 12
pls help me to solve this problem as soon as possible

Answer 1

Obviously a line you read from the file is less than 12 chars long. Try adding a print statement to print the entire string first so you can see what is being read from the file.