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Java compiler API, compiling made easy

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Before Java 1.6 was released to the public I used the Runtime class (found in java.lang) to call the java compiler (javac.exe) directly to compile a Java file from another Java application, the line of code that i used looks like this

PLAIN TEXT
JAVA:
  1. Runtime.getRuntime().exec("C:\\WINDOWS\\system32\\cmd.exe /c start javac " +  userDir + "\\test\\"+className + ".java");

But luckily for me Java 1.6 introduced a handy utility that makes it possible to compile a Java application within a Java application without making direct calls to an external application. To demonstrate that I wrote a HelloWorld Java file and a CompilerConsoleDemo class that compiles the HelloWorld java file.

PLAIN TEXT
JAVA:
  1. public class HelloWorld {
  2. public static void main(String[] args){
  3. System.out.println("Hello World");
  4. }
  5. }

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August 21st, 2008 in Java |