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Gson utilizes reflection, meaning that classes do not have to be modified to be serialized or deserialized. By default, a class only needs a defined default (no-args) constructor; however, this requirement can be circumvented (see Features). The following example demonstrates the basic usage of Gson when serializing a sample object:
Dalvik programs are written in Java using the Android application programming interface (API), compiled to Java bytecode, and converted to Dalvik instructions as necessary. A tool called dx is used to convert Java .class files into the .dex format. Multiple classes are included in a single .dex file.
On 13 November 2006, Sun's HotSpot Java virtual machine (JVM) and Java Development Kit (JDK) were made available [4] under the GPL license. [5]Since version 0.95, GNU Classpath, a free implementation of the Java Class Library, supports compiling and running javac using the Classpath runtime — GNU Interpreter for Java (GIJ) — and compiler — GNU Compiler for Java (GCJ) — and also allows ...
In Java, this task is accomplished by the primitive wrapper classes. Secondly, in Java an extra cast is needed whenever one tries to directly dereference a primitive value, as it will not be boxed automatically. The expression ((Integer) 42). toString will convert an integer literal to string in Java while 42.
A sample UML class diagram for the adapter design pattern. [5] In the above UML class diagram, the client class that requires a target interface cannot reuse the adaptee class directly because its interface doesn't conform to the target interface. Instead, the client works through an adapter class that implements the target interface in terms ...
The Java class loader, part of the Java Runtime Environment, dynamically loads Java classes into the Java Virtual Machine. [1] Usually classes are only loaded on demand . The virtual machine will only load the class files required for executing the program. [ 2 ]