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Java Programming for COBOL Programmers
Duration:   5 Days
Audience Prerequisites

  • Application Developers
  • System Designers

Experience with at least one structured programming language

Description
This course is specially designed for COBOL programmers seeking to design and develop applications using the Java Standard Edition (JSE). Based on InferData's well-received training methodologies, the course provides for a rapid and efficient transition to object-oriented software development using JSE. The attendees are expected to be familiar with COBOL or some other structured programming language. Experience with object orientation would be helpful but is not required. This five-day course covers topics in object-orientation, the basics of programming using Java, including syntax, compilation, packaging and deployment. The JSE class library and architecture are also covered as well as multi-threaded programming in Java. Other topics covered include concepts in "Interface based design for de-coupled and concurrent development". The Java class libraries covered include: Java utilities, input and output (I/O), web based client development using Java "Applets", a brief introduction to graphical user interfaces development using the Java Swing library, and an introduction to the Java Database Connectivity (JDBC). Where applicable, all the concepts will be conveyed in a way such that COBOL programmers can relate to their familiar COBOL counterparts. This course consists of a large number of fully worked out example code illustrating various concepts introduced during the course. The concepts are further reinforced through the use of well-crafted exercises at appropriate points throughout the course.
Objectives

InferData's goal is to transfer as much knowledge as possible from the classroom to the workplace. This course has been carefully designed to ease COBOL developers into Object-oriented design using Java with the use of lots of exercises, labs, and sample code. At the end of this course, students should:

  • Have a firm understanding of the Java architecture
  • Identify basic concepts of Object Oriented design
  • Be able to map concepts from COBOL to Java
  • Be able to implement Object Oriented based applications
  • Be able to design and implement effective Java programs
  • Be able to effectively use the IDE (RAD, Eclipse etc.)
  • Be able to build and embed applets in Web pages using Java
  • Be able to build multi-threaded programs using Java
  • Have the necessary foundation to pursue advanced topics in Java
Course Outline

Java Basics

  • Java Object Model
  • Class definitions
  • Class and instance variables
  • Basic data types
  • Inheritance and code reuse
  • Data encapsulation and access protection
  • Compilation and the Java run-time environment
  • The "String" and "System" classes
  • Basic Java application

Java Interfaces

  • Design by contract
  • Java Interface
  • De-coupled design
  • Using the factory design pattern
  • Implementing multiple inheritance

Comparing and Mapping COBOL Concepts to Java Language Constructs

Java Packages

  • Name spaces
  • Standard Java conventions
  • File system dependencies
  • Access protection

Error Handling

  • Java Exceptions
  • Separating business logic from error handling logics
  • Using "try", "catch" and "finally"
  • Throwing exceptions
  • Checked and unchecked exceptions
  • Navigating the stack trace
  • Repackaging and re-throwing exceptions

Threads

  • Concurrent and parallel programming
  • Deadlocks
  • Tread Class
  • Managing groups of threads using Thread Group
  • Managing thread priorities
  • Thread Synchronization
  • Designing cooperating multithreaded applications
  • Using the "Runnable" interface

Java Class Library

  • JSE Class Library Architecture
  • Naming conventions
  • Java Utility Package (java.util)
  • Collections Library
  • Storage Structures ( Array, Vector, HashMaps etc.)
  • Aggregation operations

Input and Output

  • The java.io class Library
  • Input and Output structure
  • Handling textual data with "Reader" and "Writer" streams
  • File System I/O

Basic Graphics

  • The Java graphics framework
  • Abstract Windowing Toolkit (java.awt)
  • The Java Swing Library (javax.swing)
  • The Java event model
  • Basic UI elements
  • Labels
  • TextFields
  • Buttons
  • Panels
  • Frames
  • Event Processing and Propagation
  • Handling Graphical Events using Event Listeners

Java Applets

  • Web-based client Development
  • The java.applet package
  • Issues in network security
  • The java "Sandbox" model of security
  • Applet limitations
  • Building an applet-based application

Java Database Connectivity (JDBC)

  • Fundamentals of Database Programming
  • Using the JDBC API
  • JDBC connectivity types
  • Bridging technology
  • Native API
  • Middleware
  • Pure Java Drivers
  • Loading JDBC drivers
  • Connection
  • Statements
  • ResultSets
  • Meta Data
 
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