import sun.jvm.hotspot.oops.JVMDIClassStatus; //导入依赖的package包/类
public boolean isPrepared() {
    return (saKlass.getClassStatus() & JVMDIClassStatus.PREPARED) != 0;
}
 

import sun.jvm.hotspot.oops.JVMDIClassStatus; //导入依赖的package包/类
public boolean isVerified() {
    return (saKlass.getClassStatus() & JVMDIClassStatus.VERIFIED) != 0;
}
 

import sun.jvm.hotspot.oops.JVMDIClassStatus; //导入依赖的package包/类
public boolean isInitialized() {
    return (saKlass.getClassStatus() & JVMDIClassStatus.INITIALIZED) != 0;
}
 

import sun.jvm.hotspot.oops.JVMDIClassStatus; //导入依赖的package包/类
public boolean failedToInitialize() {
    return (saKlass.getClassStatus() & JVMDIClassStatus.ERROR) != 0;
}
 

import sun.jvm.hotspot.oops.JVMDIClassStatus; //导入依赖的package包/类
private void retrieveAllClasses() {
    final List saKlasses = new ArrayList();
    SystemDictionary.ClassVisitor visitor = new SystemDictionary.ClassVisitor() {
            public void visit(Klass k) {
                for (Klass l = k; l != null; l = l.arrayKlassOrNull()) {
                    // for non-array classes filter out un-prepared classes
                    // refer to 'allClasses' in share/back/VirtualMachineImpl.c
                    if (l instanceof ArrayKlass) {
                       saKlasses.add(l);
                    } else {
                       int status = l.getClassStatus();
                       if ((status & JVMDIClassStatus.PREPARED) != 0) {
                           saKlasses.add(l);
                       }
                    }
                }
            }
    };

    // refer to jvmtiGetLoadedClasses.cpp - getLoadedClasses in VM code.

    // classes from SystemDictionary
    saSystemDictionary.classesDo(visitor);

    // From SystemDictionary we do not get primitive single
    // dimensional array classes. add primitive single dimensional array
    // klasses from Universe.
    saVM.getUniverse().basicTypeClassesDo(visitor);

    // Hold lock during processing to improve performance
    // and to have safe check/set of retrievedAllTypes
    synchronized (this) {
        if (!retrievedAllTypes) {
            // Number of classes
            int count = saKlasses.size();
            for (int ii = 0; ii < count; ii++) {
                Klass kk = (Klass)saKlasses.get(ii);
                ReferenceTypeImpl type = referenceType(kk);
            }
            retrievedAllTypes = true;
        }
    }
}