中国大学MOOC: applet要extends JApplet或extends Applet
中国大学MOOC: applet要extends JApplet或extends Applet
class Employee; class Manager extends Employee; class Director extends Employee;
class Employee; class Manager extends Employee; class Director extends Employee;
Which two, inserted at line 11, will allow the code to compile?() A: public class MinMax<?>{ B: public class MinMax<? extends Number>{ C: public class MinMax<N extends Object>{ D: public class MinMax<N extends Number>{ E: public class MinMax<? extends Object>{ F: public class MinMax<N extends Integer>{
Which two, inserted at line 11, will allow the code to compile?() A: public class MinMax<?>{ B: public class MinMax<? extends Number>{ C: public class MinMax<N extends Object>{ D: public class MinMax<N extends Number>{ E: public class MinMax<? extends Object>{ F: public class MinMax<N extends Integer>{
class A class B extends A class C extends A 则以下语句能通过编译的是( )
class A class B extends A class C extends A 则以下语句能通过编译的是( )
以下()不是Java中的合法标识符。 A: extends B: extend C: exte$nd D: EXTENDS
以下()不是Java中的合法标识符。 A: extends B: extend C: exte$nd D: EXTENDS
Java中,类继承的语法格式是() A: class子类名extends父类名{} B: class父类名extends父类名{} C: class子类名extends子类名{} D: class父类名extends子类名{}
Java中,类继承的语法格式是() A: class子类名extends父类名{} B: class父类名extends父类名{} C: class子类名extends子类名{} D: class父类名extends子类名{}
下列类的定义中,错误的是() A: class x{....} B: public x extends y{...} C: public class x extends y{....} D: class x extends y implements yl{....}
下列类的定义中,错误的是() A: class x{....} B: public x extends y{...} C: public class x extends y{....} D: class x extends y implements yl{....}
下列类头定义中,错误的是 ?( )。 A: public x extends y B: public class x extends y C: class x D: class x extends y implements y1
下列类头定义中,错误的是 ?( )。 A: public x extends y B: public class x extends y C: class x D: class x extends y implements y1
列类头定义中,错误的是 A: public x extends y B: public class x extends y C: class x extends y implements y1 D: class x
列类头定义中,错误的是 A: public x extends y B: public class x extends y C: class x extends y implements y1 D: class x
下列各种java类的定义,那种是错误的 A: class Animal{}class Dog extends Animal {} B: final class Animal{}class Dog extends Animal{} C: abstract class Animal{}class Dog extends Animal{} D: public class Animal{}class Dog extends Animal{}
下列各种java类的定义,那种是错误的 A: class Animal{}class Dog extends Animal {} B: final class Animal{}class Dog extends Animal{} C: abstract class Animal{}class Dog extends Animal{} D: public class Animal{}class Dog extends Animal{}