"Andrew Thompson" <andrewthommo@gmail.com> a écrit dans le
message de news:
1167543313.265084.108700@i12g2000cwa.googlegroups.com...
Jean Pierre Daviau wrote:

..

....

What did your tests indicate?

When I use compileClasses("string.java") I get a class not found
exception.
java.lang.ClassNotFoundException: Sample
       at Sketch.compile(Compile8.java:37)
       at Sketch.main(Compile8.java:47)

But I can make with exec (I know I would have to develop the exec
method: using wait etc.)
--------------------  
  Sketch  ---------------------------------
/*
"C:\Program Files\Java\jdk1.5.0_10\bin\java"   -classpath
.;"C:\Program Files\Java\jdk1.5.0_10\lib\tools.jar" CompileIt

"C:\Program Files\Java\jdk1.5.0_
10\bin\java"   -classpath .;"C:\Program
Files\Java\jdk1.5.0_10\lib\tools.jar" CompileIt Sample

public class Sample {
     public static void main(String args[]) {
       System.out.println(new java.util.Date());
     }
}
*/

import java.io.*;
import java.lang.reflect.*;
import java.lang.Class;
import java.lang.Compiler;

class Sketch{

public static void compile(String filename)throws Exception {

/*
Runtime.getRuntime().exec("javac " + filename);
*/
String aclass = filename.substring(0, filename.length()-5);

// compile it
boolean compileReturnCode =
java.lang.Compiler.compileClasses(filename);

   // run it
Object objectParameters[] = {new String[]{filename.substring(0,
filename.length()-5)}};
Class classParameters[] = {objectParameters[0].getClass()};
Class aClass = Class.forName(aclass);
Object instance = aClass.newInstance();
Method theMethod = aClass.getDeclaredMethod("main",
classParameters);
theMethod.invoke(instance, objectParameters);
}

public static void main(String[] args)throws Exception {
String sourceFile = args[0];
compile(sourceFile);
/* 1.2
 System.setProperty("java.compiler", "Jikes");
*/
}
}
-------------------------------------------------

good enough

of the com.sun.* package heirarchy are undocumented
for a variety of reasons, one of which is that Sun
reserved the right to move the 'entry points' to the code
at will.  AFAIR - their were a number of changes that
affected the developers of Apache/Tomcat.

Has long has there is nothing personnal against me  ;-)

JPD

Note that Sun only warns about the sun.* hierarchy, not the com.sun.*
hierarchy, of which the javac package is a part.

Note too that the tip I posted is from a publicly available Sun
document that in fact recommends the use of com.sun.tools.javac.

/gordon