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The Java Foundation Classes (JFC) are developed as an extension to Abstract Windows Toolkit (AWT), to overcome the shortcomings of AWT. Swing is a set of classes under the JFC that provide lightweight visual components and enable creation of an attractive GUI. Swing Applets provide support for assistive technologies and a RootPane (and thus support for adding menu bar). With Swing, most of the components can display text as well as images.
49 p dtu 11/10/2012 214 2
Từ khóa: Swing - II, Java Foundation Classes, Abstract Windows Toolkit, lập trình máy tính, lập trình java, kỹ thuật lập trình
The new I/O classes are present in five packages. The new I/O system is based on two concepts: buffers and channels. A buffer is a container to hold fixed amount of data. A channel represents an open connection to an I/O device like file or socket. Buffers have four attributes: Capacity, Position, Limit and Mark. Channel APIs are specified by interfaces. There are two methods in the channel interface: isOpen() and close(). Channel act as a...
45 p dtu 11/10/2012 190 2
Từ khóa: Swing - 1, Java Foundation Classes, Abstract Windows Toolkit, lập trình máy tính, lập trình java, kỹ thuật lập trình
The Abstract Windowing Toolkit (AWT) is a set of classes that allow us to create a graphical user interface and accepts user input through the keyboard and the mouse. A component is anything that can be placed on a user interface and be made visible or resized. Commonly used examples of components are textfields, labels, checkboxes, textareas . Frame and Panel are commonly used containers for standalone applications. A Panel is generally...
31 p dtu 11/10/2012 201 2
Từ khóa: Applets, Abstract Windowing Toolkit, Frame and Panel, lập trình java, lập trình máy tính, ngôn ngữ lập trình
Import statements are used to access the Java packages to be used in a program. A token is the smallest unit in a program. There are five categories of tokens: Identifiers Keywords Separators Literals Operators Class declaration only creates a template and not an actual object. Objects are instances of a class and have physical reality. Method is the actual implementation of an operation on an object.
39 p dtu 11/10/2012 175 2
Từ khóa: Abstract Window Toolkit, Class declaration, Import statements, lập trình java, lập trình máy tính, ngôn ngữ lập trình