阅读下段代码, class Dog { public String name; Dog(String name){ this.name =name; }} public class Demo1 { public static void main(String[] args){ Dog dog1 = new Dog("xiaohuang"); Dog dog2 = new Dog("xiaohuang"); String s1 = dog1.toString(); String s2 = dog2.toString(); String s3 = "xiaohuang"; String s4 = "xiaohuang"; } } 返回值为true的是()
阅读下段代码, class Dog { public String name; Dog(String name){ this.name =name; }} public class Demo1 { public static void main(String[] args){ Dog dog1 = new Dog("xiaohuang"); Dog dog2 = new Dog("xiaohuang"); String s1 = dog1.toString(); String s2 = dog2.toString(); String s3 = "xiaohuang"; String s4 = "xiaohuang"; } } 返回值为true的是()
假设数据集中“数量”是第5个字段,下面()能得到第3条记录的数量。 A: Ds.Tables[0].Rows[3][4].ToString B: Ds.Tables[0].Rows[2][4].ToString C: Ds.Tables[0].Rows[2][5].ToString D: Ds.Tables[0].Rows[3][5].ToString
假设数据集中“数量”是第5个字段,下面()能得到第3条记录的数量。 A: Ds.Tables[0].Rows[3][4].ToString B: Ds.Tables[0].Rows[2][4].ToString C: Ds.Tables[0].Rows[2][5].ToString D: Ds.Tables[0].Rows[3][5].ToString
命令:>;>;>;pets=('dog','cat','bird','dog')>;>;>;pets.index('dog')执行结果为: A: 0 B: 1 C: 2 D: 3
命令:>;>;>;pets=('dog','cat','bird','dog')>;>;>;pets.index('dog')执行结果为: A: 0 B: 1 C: 2 D: 3
public class Dog{}补全代码,创建Dog类的实例对象,赋值给引用d。 1 2 = 3 4 ;1、______ ;2、______ ;3、______ ;4、______ 。
public class Dog{}补全代码,创建Dog类的实例对象,赋值给引用d。 1 2 = 3 4 ;1、______ ;2、______ ;3、______ ;4、______ 。
对于下列Dog类,下列叙述错误的是:class Dog{ Dog(){ } Dog(int m){ } Dog(double m){ } int Dog(int m){ return m; }} A: Dog(int m)与Dog(double m)是重载的构造方法; B: Dog(int m)与int Dog(int m)是重载的构造方法; C: Dog d=new Dog();对象d创建时会调用Dog()构造方法; D: Dog d=new Dog(10);对象d创建时会调用Dog(int m)构造方法;
对于下列Dog类,下列叙述错误的是:class Dog{ Dog(){ } Dog(int m){ } Dog(double m){ } int Dog(int m){ return m; }} A: Dog(int m)与Dog(double m)是重载的构造方法; B: Dog(int m)与int Dog(int m)是重载的构造方法; C: Dog d=new Dog();对象d创建时会调用Dog()构造方法; D: Dog d=new Dog(10);对象d创建时会调用Dog(int m)构造方法;
If someone asks about the "breed"of your dog, they want to know the ________________. A: age of the dog B: sex of the dog C: type of dog D: name of the dog
If someone asks about the "breed"of your dog, they want to know the ________________. A: age of the dog B: sex of the dog C: type of dog D: name of the dog
class Animal { public Animal() { System.out.println("Animal!"); } } public class Dog extends Animal{ public Dog() { System.out.println("Dog!"); } public static void main(String[] args) { Dog dog=new Dog(); } }
class Animal { public Animal() { System.out.println("Animal!"); } } public class Dog extends Animal{ public Dog() { System.out.println("Dog!"); } public static void main(String[] args) { Dog dog=new Dog(); } }
public class Dog(){...}下列哪个选项可以是Dog类的构造方法 A: public Dog(){ } B: public void Dog(){ } C: public dog(){ } D: public void dog(){ }
public class Dog(){...}下列哪个选项可以是Dog类的构造方法 A: public Dog(){ } B: public void Dog(){ } C: public dog(){ } D: public void dog(){ }
对于下列Dog类,哪个叙述是错误的? class Dog { Dog(int m){ } Dog(double m){ } int Dog(int m){ return 23; } void Dog(double m){ } }
对于下列Dog类,哪个叙述是错误的? class Dog { Dog(int m){ } Dog(double m){ } int Dog(int m){ return 23; } void Dog(double m){ } }
______(Dog)dog is ______ useful animal.
______(Dog)dog is ______ useful animal.