New to Java

Hey, at the moment I'm creating a program whereby I write a set of objects onto a bin file, in this case an array of objects with a String name/county, and int population/area.... I'm not trying to read it back from the bin file and encountering trouble! I've managed to get it working using plain objects, however I want to be able to read in arrays of objects. The file itself compiles, however during running I get this error

java.lang.NullPointerException
at RecordFiles.CoastalRead.main(CoastalRead.java:33)
at RecordFiles.__SHELL16.run(__SHELL16.java:6)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at bluej.runtime.ExecServer$3.run(ExecServer.java:774)


Here is the program itself,

 import java.io.*;

public class CoastalRead {

    public static void main(String[] args) {
        
        CoastalTowns towns[] = new CoastalTowns[50];
		towns[0] = new CoastalTowns();
		towns[1] = new CoastalTowns();
		towns[2] = new CoastalTowns();
		towns[3] = new CoastalTowns();
		towns[4] = new CoastalTowns();

		String name, county;
		int population, area; 
		
        
        try {
            
            FileInputStream fileIn =
                    new FileInputStream("CoastalTownsBin.bin");
                    
            ObjectInputStream in = new ObjectInputStream(fileIn);
            
            for (int i = 0; i < towns.length; i++){
            
             towns[i] =(CoastalTowns) in.readObject();

        	  System.out.println("Deserialized File...");
       		  System.out.println("Name: " + towns.name);

		System.out.println("County: " + towns[i].county);

	System.out.println("Population: " + towns[i].population);

		System.out.println("Area: " + towns[i].area);



}



in.close();



fileIn.close();



} catch (IOException i) {} 

catch (ClassNotFoundException c) {}





}



}
+I'd appreciate a fast reply!+ And if someone needs the writing class I've used, I can post it asap.