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  2. Type introspection - Wikipedia

    en.wikipedia.org/wiki/Type_introspection

    The simplest example of type introspection in Java is the instanceof [1] operator. The instanceof operator determines whether a particular object belongs to a particular class (or a subclass of that class, or a class that implements that interface). For instance:

  3. Run-time type information - Wikipedia

    en.wikipedia.org/wiki/Run-time_type_information

    A Java typecast behaves similarly; if the object being cast is not actually an instance of the target type, and cannot be converted to one by a language-defined method, an instance of java.lang.ClassCastException will be thrown.

  4. List of Java bytecode instructions - Wikipedia

    en.wikipedia.org/wiki/List_of_Java_bytecode...

    This is a list of the instructions that make up the Java bytecode, an abstract machine language that is ultimately executed by the Java virtual machine. [1] The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language.

  5. typeof - Wikipedia

    en.wikipedia.org/wiki/Typeof

    typeof, alternately also typeOf, and TypeOf, is an operator provided by several programming languages to determine the data type of a variable.This is useful when constructing programs that must accept multiple types of data without explicitly specifying the type.

  6. Marker interface pattern - Wikipedia

    en.wikipedia.org/wiki/Marker_interface_pattern

    An example of the application of marker interfaces from the Java programming language is the Serializable interface: package java.io ; public interface Serializable { } A class implements this interface to indicate that its non- transient data members can be written to an ObjectOutputStream .

  7. List of Java keywords - Wikipedia

    en.wikipedia.org/wiki/List_of_Java_keywords

    Used in the declaration of a method or code block to acquire the mutex lock for an object while the current thread executes the code. [8] For static methods, the object locked is the class's Class. Guarantees that at most one thread at a time operating on the same object executes that code.

  8. Java syntax - Wikipedia

    en.wikipedia.org/wiki/Java_syntax

    A snippet of Java code with keywords highlighted in bold blue font. The syntax of Java is the set of rules defining how a Java program is written and interpreted. The syntax is mostly derived from C and C++. Unlike C++, Java has no global functions or variables, but has data members which are also regarded as global variables.

  9. Category:Articles with example Java code - Wikipedia

    en.wikipedia.org/wiki/Category:Articles_with...

    J. Jakarta EE; Jakarta Servlet; Template:Java; Template talk:Java; Java (programming language) Java annotation; Java API for XML Processing; Java class loader