A.類是對象的抽象,對象是類的實例B.類是組成java程序的最小的單位C.java支持多繼承D.一個java源文件只能有一個public類
A.publicB.privateC.protectedD.默認
A.public class ClassImplB.public class ClassImpl implements InterfaceC.public class ClassImpl extends InterfaceD.public class ClassImpl static InterFace