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unit tests def High-level testing vs. low-level testing: High-level: system function testing, acceptance testing, … Low-level: unit testing and integr 阅读全文
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Collection classes Types of collection -Collection -Map ArrayList HashMap Iterator Java Arrays Declaring an array int[] myArray; int[] myArray = new i 阅读全文
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Polymorphism Polymorphism: Means many (poly) shapes (morph) In OO programming, it means the ability of an object to take on many forms It is an import 阅读全文
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Errors An Error is any unexpected result obtained from a program during execution. Unhandled errors may manifest themselves as incorrect results or be 阅读全文
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AWT and Swing Abstract Window Toolkit (AWT): Introduced in Java 1.0 Provides classes and other tools for building programs that have a graphical user 阅读全文