Q.What is an IDE? List four facilities an IDE provides to a programmer.

Programming needs several tools; an IDE brings them together so all the work happens in one place.

Meaning. An IDE — Integrated Development Environment — is one software application that "integrates" (combines) every tool a programmer needs into a single window. Without an IDE, you would edit code in one program, compile it in another, run it in a third and debug it in a fourth; the IDE removes that switching.

Facilities an IDE provides:

1. Source-code editor — where you type the program, with colour syntax highlighting, automatic indentation and often auto-completion of names.
2. Compiler / Build — a button that runs the compiler on your source code to produce bytecode, and lists any syntax errors.
3. Run — a button that hands the bytecode to the JVM and shows the program's output in a console pane.
4. Debugger — a tool that lets you pause the program and step through it line by line, inspecting the values of variables to locate errors. (Other helpful facilities include clear error messages pointing to the exact faulty line, and project/file management.)
   ✓Final answer

   An IDE is a single application that integrates all development tools. Four facilities: an editor, a compiler/build feature, a run feature with an output console, and a debugger.

Listing hardware or an operating system as an IDE facility. An IDE is software that combines development tools; the JVM and OS are separate from it.