click below
click below
Normal Size Small Size show me how
Java Output
Keywords using in Java Output unit
| Question | Answer |
|---|---|
| java.applet | package the classes to create an applet or for an applet to communicate with another applet |
| java.awt | Java package with the Abstract Window Toolkit for creating using interfaces and painting graphics and images |
| java.awt.event | package interfaces and classes for dealing with AWT components, such as button clicks and key press events |
| java.io | package to support system input and output via streams, serialization and the file system |
| java.lang | package necessary to the Java language such as data types, threads, strings and others |
| java.net | package used for networking and client/server applications |
| java.util | package for date and time, internationalization, and miscellaneous utilities |
| javax.swing | Java package the provides lightweight Java-based GUI components |
| keywords or reserved words | words used as commands in Java that cannot be used as class names or identifiers |
| Line comment | a single line comment that begins with two forward slashes and is used to describe a single line of code |
| literal | data inside quotes that will be displayed exactly as entered in code |
| logic error | an error that occurs when the program works, but does not process as intended |
| main() method | the starting point of all Java program for execution. May call other methods |
| method header | code that notifies the compiler of the method's attributes, type of data it will generate (if any) name of the method and any additional parameters |
| method modifier | used to set the visibility of the method to other methods |
| pant() method | method to graphically draw text and images on the screen |
| parameter | data received by the method to perform an operation |
| println() method | the method of the System class that returns its value to the specified device, such as the out (default output) device |
| prototype | a functional working model of a proposed system, created to make sure it meets users' needs |
| keyword public | an access modifier in the class header that indicates the code can be accessed by all objects in the program, and extended to another class. |
| reference variable | a type of variable that refers to an object instance, not something stored in data |
| return value | the result or answer of a method to be returned, usually expressed with a data type. |
| run-time error | an error, also called an exception, that occurs when an unexpected condition prevents the program from continuing to run |
| Selector Window | The window in the upper-left corner of Textpad that displays a list of open Textpad files |
| semantic error | an error that changes the meaning of the code, usually indicated by "cannot resolve symbol" or other unrecognizable code errors |
| setBackground() method | method with the Color object to set the background color of the applet window |
| setFont() method | method to set the type of text used in the applet window |
| setForeground() method | method with the Color object to set the foreground (or text) color of the applet window |
| setSize() method | method to set the size of the applet window |
| static | method modifier that means the method is unique and can be invoked without creating a subclass or instance |
| syntax error | an error caused by a code statement that violates one of the rules in the Java program (usually typing errors) |
| System class | class containing class variables and methods for standard input, output, and utilities |
| system date | the current date and time generated by the operating system of a computer |
| system error | error which occurs when a system command is not set properly, software is installed incorrectly, or stored files have changed location |
| toString() method | method to convert a non-string type of data to String |
| variable | a location in computer memory that holds data, and can change the value of that data while the program is running |
| void | keyword that indicates the return value of a method is nothing |