Importing

• Importing a file into an existing Project
• Importing an Eclipse Project
• Importing an archived Eclipse Project, when you want to open an existing project which has been archived into a .jar file.
• Importing an archived file, when you want to import an archived file into an existing Project.

Importing an Eclipse Project

Suppose you have already created an Eclipse project, and you want to import the project into Eclipse.

1. Open File->Import
   
   
2. Select "Existing Projects into Workspace" from the Selection Wizard
   
   
3. Select Next to get the Import Wizzard. Browse to find the location of the Project
   
   
4. Make sure the Project you want is checked, then hit Finish.

Importing a Project as a Jar file

jar is a JDK tool for archiving a set of files in a directory so they are stored as a single file. This is very convenient for copying these files. Since a Java program typically contains many files (one for each class), they are typically archived. An archived file contains the suffix .jar. In this example, we will import a Project which has been archived, Welcome.jar.

1. Open File->Import
   
   
2. Select "Existing Projects into Workspace" from the Selection Wizard
   
   
3. Select Next to get the Import Wizzard. Check "Select archive file" and Browse to find the location of the Project
   
   
4. Make sure the Project you want is checked, then hit Finish. You will find the Project unarchived and ready for you
   
   

Importing an archived file into an existing project

jar is a JDK tool for archiving a set of files in a directory so they are stored as a single file. This is very convenient for copying these files. Since a Java program typically contains many files (one for each class), they are typically archived. An archived file contains the suffix .jar. In this section we will import a file into an existing project.

1. Open File->Import
   
   
2. Select "Archive File" from the Selection Wizard
   
   
3. Select Next to get the Import Wizzard. Browse to find the location of the file. Since it is an archived file, it will contain several Java class files. The file META-INF was created by the jar program. Select the entire directory
   
   
4. Select Finish. You will see a new package (in this case called Pizza)
   
   One of the files, PizzaForm has an error. This file expects a class called Pizza which is not part of the package.
5. A package is just a directory of Java classes which have been packaged together into a single file. You must include the Java declaration package Pizza; in each class, so the Java compiler knows where to find the class. Here is an example form one of the classes, PizzaCrust