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Write once, run anywhere. Write once, run anywhere ( WORA ), or sometimes Write once, run everywhere ( WORE ), was a 1995 [ 1] slogan created by Sun Microsystems to illustrate the cross-platform benefits of the Java language. [ 2][ 3] Ideally, this meant that a Java program could be developed on any device, compiled into standard bytecode, and ...
Java bytecode is used at runtime either interpreted by a JVM or compiled to machine code via just-in-time (JIT) compilation and run as a native application. As Java bytecode is designed for a cross-platform compatibility and security, a Java bytecode application tends to run consistently across various hardware and software configurations.
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 . Note that any referenced "value" refers to a 32-bit int as per the ...
If the test does not fail, the programmers should determine whether there is a bug in the test code, or that the production code does support the functionality described by the new test. Write code: The programmers write just enough production code so the new test will pass. Run test: The unit tests are executed to verify that the new ...
A rubber duck in use by a developer to aid debugging. In software engineering, rubber duck debugging (or rubberducking) is a method of debugging code by articulating a problem in spoken or written natural language. The name is a reference to a story in the book The Pragmatic Programmer in which a programmer would carry around a rubber duck and ...
Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let programmers write once, run anywhere ( WORA ), [ 16] meaning that compiled Java code can run on all platforms that support Java without the ...
Don't repeat yourself. " Don't repeat yourself " ( DRY) is a principle of software development aimed at reducing repetition of information which is likely to change, replacing it with abstractions that are less likely to change, or using data normalization which avoids redundancy in the first place. The DRY principle is stated as "Every piece ...
JasperReports is an open source Java reporting tool that can write to a variety of targets, such as: screen, a printer, into PDF, [ 2] HTML, Microsoft Excel, RTF, ODT, comma-separated values (CSV), XSL, [ 2] or XML files. It can be used in Java-enabled applications, including Java EE or web applications, to generate dynamic content.