[单选题]Java中所有类的父类是( )。A.FatherB.DangC.ExceptionD.Object
[单选题]Java中所有类的父类是( )。A.FatherB.LangC.SwingD.Object
[单选题]Java中所有类的父类是A.FatherB.LangC.ExceptionD.Object
[单选题]创建一个名为myteacher的新类,保存新类的类库名称是mylib,新类的父类是Teacher,正确的命令是 ( )。A. CREATE CLASS mylib OF myteacher AS TeacherB. CREATE CLASS myteacher OF Teacher AS mylibC. CREATE CLASS myteacher OF mylib AS TeacherD. CREATE CLASS Teacher OF mylib AS myteacher
[单选题]创建一个名为student的新类,保存新类的类库名称是mylib,新类的父类是Person,正确的命令是A.CREATE CLASS mylib OF student As PemonB.CREATE CLASS student OF Pe~on As mylibC.CREATE CLASS student 0F mylib As Pe~onD.CREATE CLASS Person OF mylib As student
[单选题]创建一个名为student的新类,保存新类的类库名称是mylib,新类的父类是Person,正确的命令是( )。A.CREATECLASSmylib
[单选题]创建一个名为student的新类,保存新类的类库名称是mylib,新类的父类是Person,正确的命令是( )。A.CREATECLASSmylib
[单选题]继承是Java语言的一个重要机制,所有的Java类都继承自根类( )。A.ClassB.ObjectC.StringD.Date
[单选题]( 13 ) Java 中所有类的父类是A. ) FatherB. ) LangC. ) ExceptionD. ) Object
[主观题]在Java语言中,复合数据类型有;类、接口和______。