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The document discusses creating Java applications and applets using TextPad as an IDE. It covers using TextPad features like the coding window and color coding. It also discusses important aspects of coding Java programs like using comments for documentation, specifying the public class header that matches the file name, and defining the main method header which is required for standalone applications. The class body is enclosed in curly braces and method headers specify modifiers, return types, names, and parameters.
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User Created Methods in Java ......................................................................................... 4
Method Modifiers ............................................................................................................................... 4
Return Type ........................................................................................................................................ 6
Other method modifiers ..................................................................................................................... 7
Method Parameters ............................................................................................................................ 7
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Method Documentation ..................................................................................................................... 9
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Class method
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- 2. Chapter 2: Creating a Java Application and Applet 2 Coding the Program - Comments as Documentation • Purpose of comments – Provides clear description when reviewing code – Helps programmer think clearly when coding • Placement of comments – Use a comment header to identify a file and its purpose – Place a comment at the beginning of code for each event and method – Place comments near portions of code that need clarification
- 3. Chapter 2: Creating a Java Application and Applet 3 Coding the Program - The Class Header • Identify how the code can be accessed with an access modifier – public indicates that the code can be accessed by all objects in the program and can be extended for a subclass • Specify a unique name for the class – The class name at the beginning of the program must match the file name exactly – Java is case-sensitive – By convention, uppercase letters are used for class names and to distinguish words in class names
- 4. Chapter 2: Creating a Java Application and Applet 4 Coding the Program - The Class Header • Use braces {} after the class header to enclose the class body
- 5. Chapter 2: Creating a Java Application and Applet 5 Coding the Program - The Method Header • The method header contains modifiers, return value, method name, and parameters along with their data type • Every stand-alone Java application must contain a main() method, which is the starting point during execution
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