jsr199

I want to use JavaCompiler to dynamically create some classes. I found the source code of the javax.tools package, but there is no implementation; some posts on the internet say it depends on tools.jar , I am not sure tools.jar associates with JRE. So, can I run the program in a JRE environment without JDK installed? Another question, what is the implementation detail of JavaCompiler , is it creating a new process to invoke the javac command? thanks Stephen Denne JRE's need to include the interfaces, and classes in that package, but do not need to provide implementations. Sun's JRE doesn't,

So I recently learned of the new JavaCompiler API available in JDK 1.6. This makes it very simple to compile a String to a .class file directly from running code: String className = "Foo"; String sourceCode = "..."; JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); List<JavaSourceFromString> unitsToCompile = new ArrayList<JavaSourceFromString>() {{ add(new JavaSourceFromString(className, sourceCode)); }}; StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null); compiler.getTask(null, fileManager, null, null, null, unitsToCompile).call(); fileManager

I follow the tutorial from Generating Java classes dynamically through Java compiler API , the code is work but what I see is the program will create a class file after compiling it. import java.io.IOException; import java.net.URI; import java.util.Arrays; import java.util.Locale; import java.util.logging.Level; import java.util.logging.Logger; import javax.tools.JavaCompiler.CompilationTask; import javax.tools.*; public class Compiler { static final Logger logger = Logger.getLogger(Compiler.class.getName()); static String sourceCode = "class HelloWorld{" + "public static void main (String

I use the class javax.tools.JavaCompiler (jdk6) to compile a source file, but the source file depends on some jar file. How to set the classpath of the javax.tools.JavaCompiler ? The javax.tools.JavaCompiler#getTask() method takes an options parameter that allows to set compiler options. The following message describes an easy way to set them in order to access the calling program's classpath: You need to configure the standard java file manager to know about the jar files(s) - you use the compiler options argument to do that. By default the java compiler object only seems to know about the