用byte[] 构造的Class 在 instanceof操作....

public class Untitled1
{
    private final DirectLoader classLoader = new DirectLoader();

    private static class DirectLoader extends ClassLoader
    {
        private DirectLoader()
        {
            super(ClassWork.class.getClassLoader());
        }

        private Class load(String name , byte[] data)
        {
            return super.defineClass(name , data , 0 , data.length);
        }
    }

    public Class loadClass(String className)
    {
        try {
            byte[] bytes = getBytes("classes/demo/WFProcess.class");
            System.out.println("size=" + bytes.length);
            return classLoader.load(className , bytes);
        }
        catch(Exception ex) {
            throw new RuntimeException(ex);
        }
    }

    private byte[] getBytes(String filename) throws IOException
    {
        File file = new File(filename);
        long len = file.length();

        byte raw[] = new byte[(int)len];

        FileInputStream fin = new FileInputStream(file);

        int r = fin.read(raw);
        if(r != len) {
            throw new IOException("Can't read all, " + r + " != " + len);
        }

        fin.close();
        return raw;
    }

    public static void main(String[] args)
    {
        try {
            Untitled1 u = new Untitled1();
            Class clas = u.loadClass("demo.WFProcess");
            Object o = clas.newInstance();
            System.out.println("class=" + o.getClass());
            if(o instanceof WFProcess) {
                System.out.println("WFProcess");
            }
            if(o instanceof Cloneable) {
                System.out.println("Cloneable");
            }
            System.out.println("OK");
        }
        catch(Exception ex) {
            ex.printStackTrace();
        }

    }

}

public final class WFProcess implements Cloneable
{
    private int id = -1;

    private String name;

    private String description;

    private String attributes;

    private boolean valid;

    public int getId()
    {
        return id;
    }

    public void setId(int id)
    {
        this.id = id;
    }

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public String getDescription()
    {
        return description;
    }

    public void setDescription(String description)
    {
        this.description = description;
    }

    public String getAttributes()
    {
        return attributes;
    }

    public void setAttributes(String attributes)
    {
        this.attributes = attributes;
    }

    public boolean getValid()
    {
        return valid;
    }

    public void setValid(boolean valid)
    {
        this.valid = valid;
    }

    public void test()
    {
        this.setId(2);
        this.setAttributes("cc");
        Object o=new Object();
    }

}