National Teaching and Learning Change ProgrammeInformation and Communication Technology:
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• Jackson Structured Programming (JSP)
  A structured programming technique that uses diagrams as a step to developing programs. Structured programming emphasises an orderly approach to program development, breaking down large tasks into smaller tasks. JSP is a particular form of this diagrammatic method which enables the design process to be efficiently managed.
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• Java
  Java is an object-oriented programming language. Java should not be confused with JavaScript, which shares only the name and a similar C-like syntax.
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• Java applet
  A small program written in Java and included in an HTML page. It is independent of the operating system on which it runs. Examples are displaying animations, creating chat rooms, time and date functions, etc.
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• JavaScript
  A programming language which enables website authors to provide dynamic content to their sites. Not to be confused with Java.
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• job
  A data processing term for a package of work regarded by the computer as a single unit. Typically, a data processing department will run programs on behalf of its clients. These programs may be small (a single report) or large (a complete payroll). Once started, each program will proceed automatically to completion and from the data processing department
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• job control language
  A specialised language, the job control language (JCL), is used to control the execution of a job in a computer. It enables the operators to specify the requirements of a job (such as which printer to use) when the job is executed. The programmer does not need to deal with these decisions when writing programs. A job control language also enables a series of small jobs to be linked together and executed in one larger and more efficient operation.
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• job queue
  In a multiprogramming system or a batch processing system the jobs wait in a job queue until the computer system is ready to execute them. This will normally be in the order they are submitted although in some systems priority levels can be assigned to jobs to ensure some are executed earlier than other less urgent jobs.
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• journal file
  A journal file is where the automatic record of any transactions carried out by a computer system, such as updates to files, is stored when creating an audit trail.
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• joystick
  An input device used for video games, etc.
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• jump (1)
  A jump allows the order of execution of the statements in a computer program to be changed. Normally instructions are executed in the sequence they are stored but this can be changed by a jump instruction which enables a program to choose which instruction to execute next. Also known as a branch.
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• jump (2)
  A jump allows the order of execution of the statements in a computer program to be changed. Normally instructions are executed in the sequence they are stored but this can be changed by a jump instruction which enables a program to choose which instruction to execute next. Also known as a branch.
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• junk mail
  Unsolicited email, usually trying to sell a product. Sometimes called spam.
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• justification
  The arrangement of characters so that they align with margins. This is used on the screen or on a printer, or may be needed when laying out data in columns or as forms.