Create the Java exception com.packtpub.exception.InvalidTypeException of type Exception as follows:

package com.packtpub.exception;

public class InvalidTypeException extends Exception {
    public InvalidTypeException(String pDetailMessage) {
        super(pDetailMessage);
    }
}

Repeat the operation for two other exceptions: NotExistingKeyException of type Exception and StoreFullException of type RuntimeException.

Open Store.java and declare thrown exceptions on getInteger() in class Store (StoreFullException is RuntimeException and does not need declaration):

public class Store {
    ...
    public native int getInteger(String pKey)
        throws NotExistingKeyException, InvalidTypeException;
    public native void setInteger(String pKey, int pInt);
    ...

Repeat the operation for all other getter prototypes (strings, colors, and so on).

These exceptions need to be caught. Catch NotExistingKeyException and InvalidTypeException...