java method get_Java Method.getClass方法代码示例

import java.lang.reflect.Method; //导入方法依赖的package包/类

@SuppressWarnings("LeakingThisInConstructor")

public MemberName(Method m, boolean wantSpecial) {

m.getClass(); // NPE check

// fill in vmtarget, vmindex while we have m in hand:

MethodHandleNatives.init(this, m);

if (clazz == null) { // MHN.init failed

if (m.getDeclaringClass() == MethodHandle.class &&

isMethodHandleInvokeName(m.getName())) {

// The JVM did not reify this signature-polymorphic instance.

// Need a special case here.

// See comments on MethodHandleNatives.linkMethod.

MethodType type = MethodType.methodType(m.getReturnType(), m.getParameterTypes());

int flags = flagsMods(IS_METHOD, m.getModifiers(), REF_invokeVirtual);

init(MethodHandle.class, m.getName(), type, flags);

if (isMethodHandleInvoke())

return;

}

throw new LinkageError(m.toString());

}

assert(isResolved() && this.clazz != null);

this.name = m.getName();

if (this.type == null)

this.type = new Object[] { m.getReturnType(), m.getParameterTypes() };

if (wantSpecial) {

if (isAbstract())

throw new AbstractMethodError(this.toString());

if (getReferenceKind() == REF_invokeVirtual)

changeReferenceKind(REF_invokeSpecial, REF_invokeVirtual);

else if (getReferenceKind() == REF_invokeInterface)

// invokeSpecial on a default method

changeReferenceKind(REF_invokeSpecial, REF_invokeInterface);

}

}