单选题类Account中字段声明正确的是?()Aclass Account{  name;  amount;  }Bclass Account{  String name;  double amount;  }Cclass Account{  String name=1.0;  double amount=”Mike”;  }Dclass Account{  String name=”Mike”,double amount=1000.0;  }

单选题
类Account中字段声明正确的是?()
A

class Account{  name;  amount;  }

B

class Account{  String name;  double amount;  }

C

class Account{  String name=1.0;  double amount=”Mike”;  }

D

class Account{  String name=”Mike”,double amount=1000.0;  }


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Java代码查错1.abstract class Name {private String name;public abstract boolean isStupidName(String name) {}}大侠们,这有何错误?

下列类Account的构造方法中,声明正确的是?()A、Account(Stringname){)B、Account(Stringname)C、Account(name)()D、NewAccount(Stringname){)

类Teacher:  class Teacher{   String name;   float salary;   Teacher(String name){   this.name = name;  }   Teacher(String name,float salary){   this.name = name;   this.salary = salary;  }  }   执行语句Teacher t = new Teacher(“Tom”,2000.0f);后,字段salary的值是哪一项?() A、 2000.0fB、 0.0fC、 null;D、 2000

类Account中字段声明正确的是?()    A、class Account{  name;  amount;  }B、class Account{  String name;  double amount;  }C、class Account{  String name=1.0;  double amount=”Mike”;  }D、class Account{  String name=”Mike”,double amount=1000.0;  }

1. public class Employee {  2. String name;  3. double baseSalary;  4. Employee(String name, double baseSalary) {  5. this.name = name;  6. this.baseSalary = baseSalary;  7. }  8. }  And:  1. public class Salesperson extends Employee { 2. double commission;  3. public Salesperson(String name, double baseSalary,  4. double commission) {  5. // insert code here  6. } 7. }  Which code, inserted at line 7, completes the Salesperson constructor?() A、 this.commission = commission;B、 superb(); commission = commission;C、 this.commission = commission; superb();D、 super(name, baseSalary); this.commission = commission;E、 super(); this.commission = commission;F、 this.commission = commission; super(name, baseSalary);

public class Employee{   private String name;   public Employee(String name){   this.name = name;  }   public String getName(){   return name;  }  }   public class Manager extends Employee{   private String department;   public Manager(String name,String department){   this.department = department;   super(name); (应于上一行掉位置)   System.out.println(getName());  }  }   Super的位置是否在方法的首行   执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?()A、 smithB、 nullC、 SALESD、 编译错误

public class Employee{       private String name;  public Employee(String name){           this.name = name;      }  public void display(){         System.out.print(name);      } }  public class Manager extends Employee{       private String department;  public Manager(String name,String department){          super(name);  this.department = department;  }  public void display(){  System.out.println(super.display()+”,”+department);      } }  执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?() A、 smith,SALESB、 null,SALESC、 smith,nullD、 null,nullE、 编译错误

public class Employee{       private String name;  public Employee(String name){           this.name = name;      }  public String getName(){         return name;      } }  public class Manager extends Employee{       private String department;  public Manager(String name,String department){          this.department = department;          super(name);  System.out.println(getName());      }  }  执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?() A、 smithB、 nullC、 SALESD、 编译错误

下列类Account的构造方法中,声明正确的是?()    A、Account (String name)()B、Account (String  name)C、Account (name)()D、NewAccount (String name)()

public class Employee{   private String name;   public Employee(String name){   this.name = name;  }   public void display(){   System.out.print(name);  }  }   public class Manager extends Employee{   private String department;   public Manager(String name,String department){   super(name);   this.department = department;  }   public void display(){   System.out.println( super.display()+”,”+department);  }   }   执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?() A、 smith,SALESB、 null,SALESC、 smith,nullD、 null,null

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public class Employee{   private String name;   public Employee(String name){   this.name = name;  }   public String getName(){   return name;  }  }   public class Manager extends Employee{   public Manager(String name){   System.out.println(getName());  }  }   执行语句new Manager(“smith”)后程序的输出是哪项?() A、 smithB、 nullC、 编译错误D、 name

单选题类Teacher:  class Teacher{   String name;   float salary;   Teacher(String name){   this.name = name;  }   Teacher(String name,float salary){   this.name = name;   this.salary = salary;  }  }   执行语句Teacher t = new Teacher(“Tom”,2000.0f);后,字段salary的值是哪一项?()A 2000.0fB 0.0fC null;D 2000

单选题public class Employee{       private String name;  public Employee(String name){           this.name = name;      }  public void display(){         System.out.print(name);      } }  public class Manager extends Employee{       private String department;  public Manager(String name,String department){          super(name);  this.department = department;  }  public void display(){  System.out.println(super.display()+”,”+department);      } }  执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?()A smith,SALESB null,SALESC smith,nullD null,nullE 编译错误

单选题public class Employee{       private String name;  public Employee(String name){           this.name = name;      }  public String getName(){         return name;      } }  public class Manager extends Employee{       private String department;  public Manager(String name,String department){          this.department = department;          super(name);  System.out.println(getName());      }  }  执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?()A smithB nullC SALESD 编译错误

单选题public class Employee{   private String name;   public Employee(String name){   this.name = name;  }   public void display(){   System.out.print(name);  }  }   public class Manager extends Employee{   private String department;   public Manager(String name,String department){   super(name);   this.department = department;  }   public void display(){   System.out.println( super.display()+”,”+department);  }   }   执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?()A smith,SALESB null,SALESC smith,nullD null,null

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单选题public class Employee{       private String name;  public Employee(String name){           this.name = name;      }  public String getName(){         return name;      } }  public class Manager extends Employee{       public Manager(String name){          System.out.println(getName());      } }  执行语句new Manager(“smith”)后程序的输出是哪项?()A smithB nullC 编译错误D name

单选题类Account中字段声明正确的是?()Aclass Account{  name;  amount;  }Bclass Account{  String name;  double amount;  }Cclass Account{  String name=1.0;  double amount=”Mike”;  }Dclass Account{  String name=”Mike”,double amount=1000.0;  }

单选题下列类Account的构造方法中,声明正确的是?()AAccount (String name)()BAccount (String  name)CAccount (name)()DNewAccount (String name)()

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单选题Given the uncompleted code of a class:     class Person {  String name, department;     int age;  public Person(String n){  name = n; }  public Person(String n, int a){  name = n;  age = a;  }  public Person(String n, String d, int a) {  // doing the same as two arguments version of constructor     // including assignment name=n,age=a    department = d;     }     }  Which expression can be added at the "doing the same as..." part of the constructor?()A Person(n,a);B this(Person(n,a));C this(n,a);D this(name,age);