Titlebook: Essential Visual J++ 6.0 fast; How to develop Java John Cowell Textbook 1999 Springer-Verlag London 1999 Debugging.Exception.Java.Java app

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Using the Windows Foundation Classes,C has been widely used by Windows programmers for several years and has good performance and a high degree of functionality. Most of the things that you can do using the WFC can be achieved using the Abstract Windowing Toolkit, but the AWT is not as mature and does not have as extensive a range of c

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Handling Exceptions,ny errors we could not prove it. However thoroughly an application is tested it is usually impossible to check every combination of input data and circumstance which may arise, some of which are outside the control of the programmer. An unexpected situation, such as running out of memory is a contin

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Using Files,iting applications that will run on a single computer or a network with a known file system, this is a common situation, and Java is only one of many languages that you could use. If you are writing applets, however, your program could be run on any computer with an unknown organisation of files. Br

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Inheritance and Polymorphism,s by combining these working, fully tested classes. Often when building your applications you will find that you have created a class which has some of the behaviour that you want but is not exactly what you need. Fortunately Java allows you to take an existing class and to extend it to form the class you want using inheritance.

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Event Handling,and keyboard events. In the next chapter we will be using the Abstract Windowing Toolkit (AWT) packages to create graphical interfaces and handling the events associated with these graphical components.

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The Layout Managers,me of the examples in the previous chapter, you may have found that your programs did not look exactly the same as the figures. This is because you may have specified a different sized applet area in your HTML file, or have a different default font type and size where this is not controlled explicitly in the program.

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Handling Exceptions,cumstance which may arise, some of which are outside the control of the programmer. An unexpected situation, such as running out of memory is a contingency that few programmers are likely to have considered.

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