Use JavaCompiler in tests isntead of manually finding "javac"

odm/src/test/java/org/springframework/ldap/odm/test/utils/CompilerInterface.java

@@ -1,35 +1,24 @@
 package org.springframework.ldap.odm.test.utils;
 
 import java.io.File;
-import java.io.InputStream;
-import java.io.InputStreamReader;
+import java.util.Arrays;
+
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
 
 public class CompilerInterface {
     // Compile the given file - when we can drop Java 5 we'll use the Java 6 compiler API
     public static void compile(String directory, String file) throws Exception {
+        File toCompile = new File(directory, file);
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
 
-        ProcessBuilder pb = new ProcessBuilder(
-                new String[] { "javac", 
-                               "-cp", "."+File.pathSeparatorChar+"target"+File.separatorChar+"classes"+
-                                  File.pathSeparatorChar+System.getProperty("java.class.path"),
-                                  directory+File.separatorChar+file });
+        Iterable<? extends JavaFileObject> javaFileObjects =
+            fileManager.getJavaFileObjectsFromFiles(Arrays.asList(toCompile));
+        compiler.getTask(null, fileManager, null, null, null, javaFileObjects).call();
 
-        pb.redirectErrorStream(true);
-        Process proc = pb.start();
-        InputStream is = proc.getInputStream();
-        InputStreamReader isr = new InputStreamReader(is);
-
-        char[] buf = new char[1024];
-        int count;
-        StringBuilder builder = new StringBuilder();
-        while ((count = isr.read(buf)) > 0) {
-            builder.append(buf, 0, count);
-        }
-        
-        boolean ok = proc.waitFor() == 0;
-
-        if (!ok) {
-            throw new RuntimeException(builder.toString());
-        }
+        fileManager.close();
     }
 }