In computer programming, an interpreter is basically a computer application that directly interprets instructions written within a scripting or programming language, without having them first be compiled into a machine code program. As a result, the interpreter performs much of the heavy lifting in converting a subject from one language to another. For instance, if you wanted to translate Spanish sentences into English using a program such as the Microsoft Line Editor, the program would first translate each sentence into its Spanish-English translation. Checkout Auslan interpreter for more info.
However, there are times when translating languages isn’t enough. Sometimes, there will be things in the original sentence that only make sense to the interpreter. In this case, a compiled machine code interpreter will do the work necessary to translate the contents of the file into the right form for human interpretation. This is known as compile-time error and has become a standard in many software development projects. Since most businesses cannot afford to employ all the new hires required to maintain a team of developers for each language on their development team, developers often outsource this work to interpreters instead of hiring a dedicated team.
Since an interpreter allows for complete abstraction of source and object code, programmers can write one single program and use an interpreter to translate it into machine code. For example, this might be the case if a programmer wanted to create an interactive application using Java. To create the application, they would write the program’s source code then translate it into machine code using an interpreter. Because the interpreter abstracts all source code, the application can be run anywhere that has a Java virtual machine. Another example of this is interpreters being used to translate operating system kernels into executable files.