网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
单选题
类Student代码如下:  class Student{    String name;  int age;  Student(String nm){  name = nm; } }  执行语句Student stu = new Student()后,字段age的值是哪项?()
A

 0

B

 null

C

 false

D

 编译错误


参考答案

参考解析
解析: 暂无解析
更多 “单选题类Student代码如下:  class Student{    String name;  int age;  Student(String nm){  name = nm; } }  执行语句Student stu = new Student()后,字段age的值是哪项?()A  0B  nullC  falseD  编译错误” 相关考题
考题 已知Student类是一个空类,stu1和stu2是Student类的两个对象,则通过“stu1.name='李晓明'”语句增加的属性可以通过()访问。 A.Student.name、stu1.name或stu2.nameB.Student.name或stu1.nameC.stu1.name或stu2.nameD.stu1.name

考题 阅读以下说明和java代码,将应填入(n)处的字句写在对应栏内。[说明]有若干教师,每个教师只有姓名,一个教师可以指导多名研究生;每名研究生有姓名和研究方向,程序最后输出每个教师指导的所有研究生的姓名和研究方向。[Java程序]public class Teacher {String name;int top=0;Student[] student=new Student[20];public Teacher() {}public Teacher(String name) { this.name=name;}boolean add(Student stu){int len=this.student.length;if (top<len-1) {this.student[top]=siu;(1);return true;}elsereturn (2);}void disp(){System.out.println(“指导老师"”+this.name);System.out.println(“研究生:”);for(int i=0;i<(3);i++){System.out.println(“姓名:”+this.student[i].name+“\t研究方向:”+this.student[i]. search);}}public static void main(String[] args){Teacher t[]={new Teacher(“李明”),new Teacher(“王华”)};Student s1 = new Student(“孙强”,“数据库”);Student s2 = new Student(“陈文”,“软件工程”);Student s3 = new Student(“章锐”,“计算机网络”);if(! t[0].add(s1)) {System.out.println(“每个老师最多只能指导20个学生!”);}if(! t[0].add(a2)) {System.out.println(“每个老师最多只能指导20个学生!”);}if(! t[1].add(s3)) {System.out.println(“每个老师最多只能指导20个学生!”);}for(int i=0;i<2;i++)(4);}}class (5) {String name;String search;public Student(){}public Student(String name,String search){this.name=name;this.search=search;}String getName(){return this.name;}String getSearch(){return this.search;}}

考题 假设有如下的记录类型: Type Student number As String name AS String age As Integer End Type 则正确引用该记录类型变量的代码是______。A.Student. name="" s. name="张红"B.Dim s As Student s. Dame="张红"C.Dim s As Type Student s. name="张红"D.Dim s As Type s. name="张红"

考题 若有以下定义的语句 struct student {int age; int num;}; struct student stu[3]={{1001,20},{1002,19},{1003,21}}; main() {stmct student *p; p=stu; …} 则以下不正确的引用是A.(p++)->numB.p++C.(*p).numD.P=stu.age.

考题 设有如下的用户定义类型: Type Student number As String name As string age As Integer End Type 则以下正确引用该类型成员的代码是______。A. Student name="李明”B.Dim s As Student s.name="李明"C.Dim s As Type Student s.name="李明"D.Dim s As Type s.name="李明"

考题 给出下列的不完整的类代码,则哪个语句可以被加到横线处? ( ) class Person{ String name,department; int age; public Person(String n){name=n;} public Person(String n,int s){name=n; age=a;} public Person(String n,String d,int a){ department=d;______ } }A.Person(n,a);B.this(Person(n,a));C.this(n,s);D.this(name,age);

考题 类Student代码如下:classStudent{Stringname;intage;Student(Stringnm){name=nm;}}执行语句Studentstu=newStudent()后,字段age的值是哪项?() A.0B.nullC.falseD.编译错误

考题 设有如下的记录类型: TypeStudent number As String name AS String age As Integer End Type 则正确引用该记录类型变量的代码是( )。A.Student.name="张红"B.Dim s As Student s.name="张红"C.Dim s As Type Student s.name="张红"D.Dim s As Type s.name="张红"

考题 给出下列的不完整的类代码,则下列的( )语句可以加到横线处。 class Person{ String name,department; int age public Person(String n){name=n;} public Person(String n,int a){name=n;age=a;} pubilc Person(String n,String d,int a) { _______________ department=d; } }A.Person(n,a);B.this(Person(n,a));C.this(n,a);D.this(name,age);

考题 设有如下的记录类型: Type Student Number As String Name As String Age As Integer End Sub 则能正确引用该记录类型变量的代码是( )。A.Student.name=""B.Dim s As Students.name=“张红”C.Dims As Tye Students.name=“张红”D.DimsAsTypes.name=“张红”

考题 有如下语句: Type Student Name As String Age As Integer Sex As String End Type Dim Stu As Student With Stu .Name="张红" .Age=22 .Sex="女" End With 执行Print Stu.Age语句后的结果是A.张红B.22C.“女”D.Age

考题 阅读下列XML文档,回答问题1至问题4,将解答填入对应栏内。【XML文档】<? Xml version= "1.0" encoding=" GB2312 "?><!—以下是文档的主体部分→<college><title>希赛教育</title><head>软考培训部</Head><Stu_Num unit="人">2</Stu_Num><Student><Name>张网管</Name><Age>21 </Age><Sex>男</Sex><Class>软考2班</Class></Student><Student><Name>李软设</Name><Age>20</Age><Sex>女</Sex><Class>软考3班</Class></Student></College>与HTML相比,XML具有哪些特点?

考题 有如下说明和定义语句: struct student { int age; char num{8};}; struct student stu[3]={{20,"200401"},{21,"200402"),{19,"200403"}}; struct student *p=stu; 以下选项中引用结构体变量成员的表达式错误的是( )。A.(p++)->numB.p->numC.(*p).numD.stu[3].age

考题 有如下用户定义类型及操作语句: Tyoe Student SNo As String Sname As String SAge As Integer End Type Dim Stu As Student With Stu SNo=”200609001” SName=”陈果果“ A ge=19 End With 执行MsgBox Stu,Age 后,消息框输出结果是 【13】

考题 阅读以下说明和Java 码,将应填入(n)处的字名写在的对应栏内。[说明] 编写一个学生类Student,要求:(1) 学生类Student 属性有:id: long 型,代表学号name: String类对象,代表姓名age: int 型,代表年龄sex: boolen 型,代表性别(其中:true 表示男,false 表示女)phone: String 类对象,代表联系电话(2) 学生类Student 的方法有:Student (long i,String n,int a,boolean s,String p):有参构造函数,形参表中的参数分别初始化学号、姓名、年龄、性别和联系电话。int getAge ():获取年龄作为方法的返回值。boolean getSex ():获取性别作为方法的返回值。String getPhone ():获取联系电话作为方法的返回值。public String to String ():以姓名:性别:学号:联系电话的形式作为方法的返import java. applet. Applet;import java. awt.* ;public class Student extends Applet {long id;String name, phone;int age;boolean sex;Student(long i, String n, int a, boolean s, String p){id=i;name = n;age = a;sex= s;phone = p;{public void paint( Graphics g){Student x= new Student (5000," xiaoliu" , 89, true, " 8989898" );(1);(2)g. drawstring( x. getPhone( ), 140,140);}int getAge( ){ return age; }boolean getsex ( ){ return sex; }String getPhone( ){ return phone; }String ToString( ){(3)}}

考题 设有如下的记录类型: Type Student number As String name As String age As Integer End Type 则正确引用该记录类型变量的代码是______。A.StUdent.name=""B.Dim s As StUdent s.name="张红"C.Dim s As Type Student s.name="张红"D.Dim s As Type s.name="张红"

考题 有下列语句:  struct Birthday{public int year;  public int month;   public int day;}; struct Student{ int no;  string name;   int age;  public Birthday bir; };  ……  Student Stu;  如果要把Stu的出生年份赋值为1988,正确的语句是()A、 Stu.bir.year=1988;B、 Stu.year=1988;C、 Stu. Birthday.year=1988;D、 Student. Birthday.year=1988;

考题 类Student代码如下:  class Student{    String name;  int age;  Student(String nm){  name = nm; } }  执行语句Student stu = new Student()后,字段age的值是哪项?() A、 0B、 nullC、 falseD、 编译错误

考题 类Student的声明如下:   package com.school class Student{ String name;  int age;  Student(String name,int age){  //code } void study(String subject){ / /code } }  正确调用方法study(String subject)的是哪项?() A、Student stu = new Student(“Tom”,23); stu.study(“数学”);B、Student.study(“数学”);C、Student stu = new Student(“Tom”,23); stu.study();D、Student stu = new Student(“Tom”,23); String result=stu.study(“数学”);

考题 下列有关类声明的代码片段,哪一项是正确的?() A、 import java.sql.*; package school; class Student{ }B、 package school; import java.sql.*; class Student{ }C、 package school; class Student{ } import java.sql.*;D、 package school; import java.sql.*;private String name; class Student{ }

考题 类 Student 中字段mark的缺省值是哪项?()   Class Student{   String name;   int age;   float market;   ·········   }  A、0.0fB、numllC、falseD、0E、0.0

考题 对于如下代码,描述正确的是哪项?()  class Student{   public static void main(String[] args){   Student student=new Student();  }  }  A、new Student()创建了Student对象的一个实例B、Student student声明了对象Student的一个引用C、class Student声明了一个类D、new Student()创建了一个类E、Student student 声明了一个类

考题 对于如下代码,描述正确的是哪项? ()   class Student{   public static void main(String[] args){   Student student = new Student();  }  }  A、Student student 声明了一个类B、new Student()创建了Student 对象的一个实例C、Student student 声明了对象Student 的一个引用D、class Student 声明了一个类

考题 多选题对于如下代码,描述正确的是哪项? ()   class Student{   public static void main(String[] args){   Student student = new Student();  }  }AStudent student 声明了一个类Bnew Student()创建了Student 对象的一个实例CStudent student 声明了对象Student 的一个引用Dclass Student 声明了一个类

考题 单选题下列有关类声明的代码片段,哪一项是正确的?()A  import java.sql.*; package school; class Student{ }B  package school; import java.sql.*; class Student{ }C  package school; class Student{ } import java.sql.*;D  package school; import java.sql.*;private String name; class Student{ }

考题 单选题类Student代码如下:D   class Student{   String name;   int age;   Student(String nm){ (构造方法)   name = nm;  }  }   执行语句Student stu = new Student()后,字段age的值是哪项?()A  0B  nullC  falseD  编译错误

考题 单选题类Student的声明如下:   package com.school class Student{ String name;  int age;  Student(String name,int age){  //code } void study(String subject){ / /code } }  正确调用方法study(String subject)的是哪项?()A Student stu = new Student(“Tom”,23); stu.study(“数学”);B Student.study(“数学”);C Student stu = new Student(“Tom”,23); stu.study();D Student stu = new Student(“Tom”,23); String result=stu.study(“数学”);