Examples of javax.tools.diagnostics.runtime.java.JavaClassLoader

Package javax.tools.diagnostics.runtime.java

Examples of javax.tools.diagnostics.runtime.java.JavaClassLoader

javax.tools.diagnostics.runtime.java.JavaClassLoader
Represents an internal ClassLoader structure within a Java Virtual Machine instance. For most ClassLoaders there is a corresponding {@link java.lang.ClassLoader}instance within with JavaRuntime. For primordial class loaders such as the bootstrap class loader, there may or may not be a corresponding {@link java.lang.ClassLoader} instance.

Since Java does not define any strict inheritance structure between class loaders, there are no APIs for inspecting 'child' or 'parent' class loaders. This information may be inferred by inspecting the corresponding {@link java.lang.ClassLoader} instance:
pseudo javacode example
```
 JavaClassLoader  loader; JavaObject instance=loader.getObject(); String classLoaderName=instance.getJavaClass().getName(); 
```
@see java.lang.ClassLoader

      if (nextClassloader instanceof CorruptData) {
        System.err.println("returned CorruptData `" + nextClassloader + "'");
        break;
      }


      JavaClassLoader aJavaClassloader = (JavaClassLoader) nextClassloader;
      JavaClass theJavaClass;
      try {
        JavaObject classLoaderObject = (aJavaClassloader).getObject();
        
        // The system class loader doesn't have an object.

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  {
    JavaClass math = null;
    Iterator loaders = defaultJavaRuntime().getJavaClassLoaders().iterator();
    
    while (loaders.hasNext()) {
      JavaClassLoader loader = (JavaClassLoader) loaders.next();
      try {
        for (Iterator iter = loader.getDefinedClasses().iterator(); iter.hasNext();) {
          JavaClass clazz = (JavaClass) iter.next();
          if (clazz.getName().equals("java/lang/Math")) {
            math = clazz;
            break;
          }

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   * @param listener TODO
   * 
   * @throws CorruptDataException
   */
  private JavaClassLoader getClassLoader1(JavaClass j2) throws CorruptDataException {
    JavaClassLoader load;
    // Fix up possible problem with arrays not having a class loader
    // Use the loader of the component type instead
    for (JavaClass j3 = j2; ; j3 = j3.getComponentType()) {
      load = j3.getClassLoader();
      if (load != null) break;

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   */
  private JavaClassLoader getClassLoader(JavaClass j1) throws CorruptDataException {
    try {
      return getClassLoader1(j1);
    } catch (CorruptDataException e) {
      JavaClassLoader load = getClassLoader2(j1);
      if (load != null) return load;
      throw e;
    }
  }

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   * @param j1
   * 
   * @throws CorruptDataException
   */
  private JavaClassLoader getClassLoader2(JavaClass j1) throws CorruptDataException {    
    JavaClassLoader load = null;
    JavaRuntime run = getJavaRuntime();
    for (Iterator i = run.getJavaClassLoaders().iterator(); i.hasNext();) {
      Object next = i.next();
      if (next instanceof CorruptData) {
        continue;
      }
      JavaClassLoader jcl = (JavaClassLoader)next;
      for (Iterator j = jcl.getDefinedClasses().iterator();j.hasNext();) {
        Object next2 = j.next();
        if (next2 instanceof CorruptData) {
          continue;
        }
        JavaClass j2 = (JavaClass)next2;

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      if (next instanceof CorruptData) {
        throw new Exception("CorruptData found instead of JavaClassLoader");
      }
      
      JavaClassLoader loader = (JavaClassLoader) next;
      
      Iterator classes = loader.getDefinedClasses().iterator();
      
      while (classes.hasNext()) {
        Object next2 = classes.next();
        
        if (next2 instanceof CorruptData) {

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  }


  public JavaClassLoader defaultJavaClassLoader() {
    Iterator loaders =  defaultJavaRuntime().getJavaClassLoaders().iterator();
    assertTrue(loaders.hasNext());
    JavaClassLoader loader = (JavaClassLoader) loaders.next();
    Iterator i=loader.getDefinedClasses().iterator();
    while ((!i.hasNext()) && (loaders.hasNext())) {
      loader = (JavaClassLoader) loaders.next();
    }
    return loader;
  }

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    return loader;
  }


  public JavaClass defaultJavaClass() {
    // Choose a class loader
    JavaClassLoader loader = defaultJavaClassLoader();
    
    // Choose a class which has a superclass
    try {
      for (Iterator iter = loader.getDefinedClasses().iterator(); iter.hasNext();) {
        JavaClass clazz = (JavaClass) iter.next();
        if ( !clazz.getName().equals("java/lang/Object") &&
             !clazz.getName().equals("boolean"         ) &&
             !clazz.getName().equals("byte"            ) &&            
             !clazz.getName().equals("char"            ) &&

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   * Test method for 'javax.tools.diagnostics.runtime.java.JavaClass.getClassLoader()'
   */
  public void testGetClassLoader()
  {
    try {
      JavaClassLoader loader = _testClass.getClassLoader();
      assertNotNull(loader);
    } catch (CorruptDataException e) {
      //allowed by the spec
    } catch (Exception e) {
      //if we caught anything else, this is an error

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  private JavaClass _findClassForName(String candidateClass)
  {
    Iterator allLoaders = defaultJavaRuntime().getJavaClassLoaders().iterator();
    JavaClass subclass = null;
    while (allLoaders.hasNext() && (null == subclass)) {
      JavaClassLoader loader = (JavaClassLoader) allLoaders.next();
      Iterator classes = loader.getDefinedClasses().iterator();
      while (classes.hasNext()  && (null == subclass)) {
        JavaClass oneClass = (JavaClass) classes.next();
        try {
          if (oneClass.getName().equals(candidateClass)) {
            subclass = oneClass;

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