made changes according to 2nd batch of comments

intercepting-filter/src/main/AddressFilter.java

@@ -1,7 +1,7 @@
 
 /**
  * Concrete implementation of filter
- * 
+ * This filter is responsible for checking/filtering the input in the address field, returns null if field is empty
  * @author joshzambales
  *
  */

intercepting-filter/src/main/Client.java

@@ -12,11 +12,11 @@ import java.awt.event.*;
  *
  */
 public class Client extends JFrame{
-	FilterManager filterManager;
-	JLabel jl;
-	JTextField[] jtFields;
-	JTextArea[] jtAreas;
-	JButton clearButton, processButton;
+	private FilterManager filterManager;
+	private JLabel jl;
+	private JTextField[] jtFields;
+	private JTextArea[] jtAreas;
+	private JButton clearButton, processButton;
 	public Client(){
 		super("Client System");
 		setDefaultCloseOperation(EXIT_ON_CLOSE);
@@ -69,7 +69,9 @@ public class Client extends JFrame{
 		processButton.addActionListener(new ActionListener(){
 			@Override
 			public void actionPerformed(ActionEvent e){
-				jl.setText(sendRequest(jtFields[0].getText()+"&"+jtFields[1].getText()+"&"+jtAreas[0].getText()+"&"+jtFields[2].getText()+"&"+jtAreas[1].getText()));
+				String request = String.format("%s&%s&%s&%s&%s",jtFields[0].getText(),jtFields[1].getText(),jtAreas[0].getText(),jtFields[2].getText(),jtAreas[1].getText());
+				
+				jl.setText(sendRequest(request));
 			}
 		});
 

intercepting-filter/src/main/ContactFilter.java

@@ -1,6 +1,6 @@
 /**
  * Concrete implementation of filter
- * 
+ * This filter checks for the contact field in which it checks if the input consist of numbers and it also checks if the input follows the length constraint (11 digits)
  * @author joshzambales
  *
  */

intercepting-filter/src/main/DepositFilter.java

@@ -1,6 +1,7 @@
 /**
  * Concrete implementation of filter
- * 
+*
+ * This checks for the deposit code, returns null when deposit field is empty 
  * @author joshzambales
  *
  */

intercepting-filter/src/main/Filter.java

@@ -1,5 +1,7 @@
 /**
- * Filter interface
+* Filter interface 
+ * Filters perform certain tasks prior or after execution of request by request handler.
+ * In this case, before the request is handled by the target, the request undergoes through each Filter
  * @author joshzambales
  *
  */

intercepting-filter/src/main/FilterChain.java

@@ -6,7 +6,7 @@
  */
 public class FilterChain{
 	private ArrayList<Filter> filters = new ArrayList<Filter>();
-	private Target target;
+	private final Target target;
 
 	public FilterChain(Target target){
 		this.target = target;

intercepting-filter/src/main/FilterManager.java

@@ -9,7 +9,7 @@ import java.awt.event.*;
  *
  */
 public class FilterManager{
-	FilterChain filterChain;
+	private FilterChain filterChain;
 	
 	public FilterManager(Target target){		
 		filterChain = new FilterChain(target);

intercepting-filter/src/main/NameFilter.java

@@ -1,3 +1,10 @@
+
+/**
+ * Concrete implementation of filter
+ * This filter checks if the input in the Name field is valid. (alphanumeric) 
+ * @author joshzambales
+ *
+ */
 public class NameFilter implements Filter{
 	public String execute(String[] request){
 		if(request[0].equals("") || request[0].matches(".*[^\\w|\\s]+.*")){

intercepting-filter/src/main/OrderFilter.java

@@ -1,5 +1,6 @@
 /**
  * Concrete implementation of filter
+ * This checks for the order field, returns null when order field is empty 
  * 
  * @author joshzambales
  *

intercepting-filter/src/main/Target.java

@@ -10,10 +10,10 @@ import java.awt.event.*;
  *
  */
 public class Target extends JFrame{
-	JTable jt;
-	JScrollPane jsp;
-	DefaultTableModel dtm;
-	JButton del;
+	private JTable jt;
+	private JScrollPane jsp;
+	private DefaultTableModel dtm;
+	private JButton del;
 	public Target(){
 		super("Order System");
 		setDefaultCloseOperation(EXIT_ON_CLOSE);