Java Collectors – Best Practices This document is intended to present best practices in writing Java Collectors Content 1 Extracting java.util.Date from XML Files. Citeste tot ...
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Crystal Java Smart Viewer Issues and Restrictions
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Java Certification Exam
Java Certification Exam 1. Valid modifiers : 2. Range of int & char 3. Valid top level class declarations Class A Class A exte Citeste tot ...
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Applets and HTML
Applets and HTML · <APPLET> tag specifies applet information in a HTML page · It must be enclosed between <BODY> and </BODY> ·&nbs Citeste tot ...
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Language Fundamentals
Language Fundamentals 1. Source file’s elements (in order) a. Package declaration b. Import statements c. Clas Citeste tot ...
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Threads
Threads · Java is fundamentally multi-threaded. · Every thread corresponds to an instance of java.lang.Thread class or a sub-class. · Citeste tot ...
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Layout Managers
Layout Managers · Precise layout functionality is often performed and a repetitive task. By the principles of OOP, it should be done by classes dedicated to it. These classes are layout managers. Citeste tot ...
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Flow Control and Exceptions
Flow Control and Exceptions · Unreachable statements produce a compile-time error. while (false) // won’t compile for (;false;) // won’t compile if (false) // will compile, to provide Citeste tot ...
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java.lang package
java.lang package · Object class is the ultimate ancestor of all classes. If there is no extends clause, compiler inserts ‘extends object’. The following methods are defined in Object class. All m Citeste tot ...
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Objects and Classes
Objects and Classes Implementing OO relationships · “is a” relationship is implemented by inheritance (extends keyword) · “has a” relationship is imp Citeste tot ...
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Painting
Painting · Some objects have default appearance. When they are created, OS decorates with a pre-defined appearance. · Some components don’t have any intr Citeste tot ...
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Events
Events · Java 1.0’s original outward rippling event model had shortcomings. - An event could only be handled by the component that originate Citeste tot ...
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Components
Components · Java’s building blocks for creating GUIs. · All non-menu related components inherit from java.awt.Component, that provides basic support fo Citeste tot ...
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Operators and assignments
Operators and assignments 1. Unary operators. 1.1 Increment and Decrement operators ++ -- We have postfix and prefix notation. In post-fix notation value of the variable/expression is modified after the Citeste tot ...
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Modifiers
Modifiers 1. Modifiers are Java keywords that provide information to compiler about the nature of the code, data and classes. 2. Access modifiers – public, protected, private Citeste tot ...
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SQL 101
SQL 101 SQL—the language of database. This chapter’s primary purpose is to serve as a primer on this data sublanguage. Although it would be impossible for me to cover the intricacies of SQL in just one chapter, I do intend to give you a solid Citeste tot ...
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The Interactive SQL Applet
The Interactive SQL Applet Now that you have seen how to use JDBC drivers, it’s time we ante up. In this chapter, we jump into the JDBC with an example applet that we’ll build on and derive from through the rest of the book. Our Interactive Qu Citeste tot ...
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JDBC: Databases The Java Way
JDBC: Databases The Java Way! The Internet has spurred the invention of several new technologies in client/server computing—the most recent of which is Java. Java is two-dimensional: It’s a programming language and also a client/server system Citeste tot ...
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Using JDBC Drivers
Using JDBC Drivers As a developer who’s using the JDBC, one of the first things you need to understand is how to use JDBC drivers and the JDBC API to connect to a data source. This chapter outlines the steps necessary for you to begin that pro Citeste tot ...
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Prototype
Prototype Proprietati Tip: Creational, Obiect Nivel: O singura clasa Scop Face mai usoara crearea dinamica a obiectelor prin definirea de clase ale caror obiecte pot cr Citeste tot ...
