JAVA Programming

Chapter 9

Map Containers

OBJECTIVES

• To introduce Map interface with an overview of its three implementation types
• To create Hashtable and store key-value pairs to Hashtable
• To add collections such as LinkedList and iterators to Hashtable
• To solve word counting of a text problem
• To check bracket pairs and brackets nesting in an expression
• To introduce HashMap and explain its methods
• To explain multimaps and nested HashMaps
• To explain LinkedHashMap to store pairs of elements
• To introduce TreeMaps and explain its natural ordering of its pairs
• To solve random number generation problem
• To explain how to create a property file
• To populate Hashtable pairs from a file using Properties class

9.1 INTRODUCTION

In Chapter 8, the readers were introduced ...