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Using Eclipse: an Introduction

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Using Eclipse: an Introduction

STARTING ECLIPSE
  1. Start eclipse by directly Biologydouble clicking the file "eclipse" inside the extracted folder (Eg. /home//Desktop/software/eclipse. This could be different and depends on where you have extracted the eclipse archive).
  2. Select the working directory to save your current project. The default directory will be /home//workspace

Start A New Project
  1. Click File->New
  2. Choose "Dynamic Web Project"
  3. Provide a name for the project
  4. Choose the option "New Runtime" and a New runtime window opens
    1. Choose "Apache Tomcat v7.0" and say Next.
    2. In the "Tomcat installation directory", browse and select "/home//Desktop/software/apache-tomcat-7.0.2"
    3. Click Finish
  5. Click Finish
Running a Hello world program in eclipse

  1. Click File-> New -> Java project -> give project name -> finish
  2. Right click on project name -> new -> class
  3. Select "Class" and say Next.
  4. Give a class name, say "HelloWorld" and say Finish.
  5. Write a main method inside the class as follows:
    • public static void main(String[] args){
      System.out.println("Hello world");
      }
  6. Save the file(Ctrl+S) and Right-click anywhere in the editor window and select Run As > Run as Java Application
  7. It runs and prints Hello world in the Console window.
Including the JDBC - PostgreSQL driver in the project build path
  1. Make sure you have the postgresql JDBC jar file. It can be downloaded from here. After downloading, copy it (Right-click, select copy).
  2. For normal Java project(simple JDBC) follow these instructions:  right click on project name -> Build Path -> configure build path-> libraries (tab)  -> Add external Jars -> browse postgresql JDBC jar file-> OK
  3. For  Dynamic Web project (Servlets) follow these instructions: In Eclipse, open Project Explorer, select the current project and browse to WebContent > WEB-INF > lib, and paste(Right-click, select paste) the copied postgresql JDBC jar file  'lib' folder.
  4. Now, create a new class and copy the contents of the sample JDBC program from here.
  5. Start your postgresql server before running this program.
  6. Update the source code with the database name, username, password etc. as described in comments in the sample program.
  7. Run as Java application(Right-Click, select Run As > Java Application). The sample program takes in a department name and prints out all its student details. Enter a valid dept_name and hit enter. It should print the output successfully.
reference: iitb.ac.in/moodle
 

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