(Java) Overwrite line in .txt file

package textfile;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

public class DecrementingCounter
{
    final static String COUNTER_FILENAME="counter.properties";
    final static String USAGE_COUNTER_PROPERTY_KEY="usageCounter";
    final static int    DEFAULT_COUNTER_VALUE=2000;
    
    public static int decrementUsageCounter() throws FileNotFoundException, IOException
    {
        Properties counterProps = new Properties();
        
        // Step 1 : read the properties file
        File counterFile = new File("counter.properties");
        int usageCounterValue = DEFAULT_COUNTER_VALUE;
        
        if (counterFile.exists())
        {
            counterProps.load(new FileInputStream(counterFile));
            if (counterProps.containsKey(USAGE_COUNTER_PROPERTY_KEY))
            {
                usageCounterValue = Integer.parseInt(counterProps.getProperty(USAGE_COUNTER_PROPERTY_KEY));
            }
        }
        
        // Step 2 : decrement the counter and write it back
        usageCounterValue--;        
        counterProps.put(USAGE_COUNTER_PROPERTY_KEY, Integer.toString(usageCounterValue));
        
        counterProps.store(new FileOutputStream(counterFile), "");
        
        return(usageCounterValue);
    }
    
    
    public static void main(String[] args)
    {
        try
        {
            int usageCounter = decrementUsageCounter();
            
            if (usageCounter<=0)
            {
                System.out.println("Your demo trial has expired");
            }
            else
            {            
                System.out.println("Usage Counter = " + usageCounter);
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }
   
}