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Annotations have no direct effect on the operation of the code they annotate. Useful for Information to the compiler - Annotations can be used by the compiler to detect errors or suppress warnings 2.Compile time and Deployment time processing - Software tools can process annotation information to generate code, XML files, and so forth. Runtime Processing - Some annotations are available to be examined at runtime 4. @Override void my Super Method() my String = (@Non Null String) str; class Unmodifiable List void monitor Temperature() throws @Critical Temperature Exception 5.Oracle brought Java in 2009 – 2010 Java language is written in c, c , java As of Sep-2015 - Current Stable build of Java is 8 ( 1.8.0 ) and preview build is 9 Java is released under GNU License in 2006. Java Overview (https://docs.oracle.com/javase/tutorial/java/index.html) Inheritance Exercise: Understand Interface, Interface Vs Abstract Classes, When to use Interface, When to user Abstract Classes 1.Java 1.0 released in 1995 ( Provided WORA platform ) Java 1.1 Released in 1997 ( Includes AWT, JDBC, Java Beans, RMI, JIT ) Java 1.2 Released in 1998 ( Includes J2EE, J2SE, Collctions framework) Java 1.3 Released in 2000 (Includes JVM, JNDI, JPDA ) Java 1.4 Released in 2002 (Includes XSLT, i PV6 support ) Java 1.5 Released in 2004 (Includes Annotations, Generics , Enumerations, Varargs ) Java 1.6 Released in 2006 (Enhancements to GUI, JAXB, JVM). You want to share code among several closely related classes. You expect that classes that extend your abstract class have many common methods or fields, or require access modifiers other than public (such as protected and private). You want to declare non-static or non-final fields.Alan Turing was a British pioneering computer scientist, mathematician, logician, cryptanalyst, philosopher, mathematical biologist, and marathon and ultra distance runner.He was highly influential influential in the development of computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general purpose computer.Much like the more familiar formal parameters used in method declarations, type parameters provide a way for you to re-use the same code with different inputs.Enabling programmers to implement generic algorithms. By using generics, programmers can implement generic algorithms that work on collections of different types, can be customized, and are type safe and easier to read.
You expect that unrelated classes would implement your interface.
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