'javac' is not recognized as an internal or external command

Question

I have to convert my Matlab algorithm in Java. For this I\'m using matlab builder ja toolbox, after following all the necessary steps, the build fails and this error is disp

Answer 1

If you receive this error, Windows cannot find the compiler (javac).

Here's one way to tell Windows where to find javac. Suppose you installed the JDK in C:\jdk1.8.0. At the prompt you would type the following command and press Enter:

C:\jdk1.8.0\bin\javac HelloWorld.java If you choose this option, you'll have to precede your javac and java commands with C:\jdk1.8.0\bin\ each time you compile or run a program. To avoid this extra typing, consult the lecture "Creating a Hello World application" in this website

Class names, 'HelloWorld', are only accepted if annotation processing is explicitly requested

If you receive this error, you forgot to include the .java suffix when compiling the program. Remember, the command is javac HelloWorld.java not javac HelloWorld.