举一反三
- （06-06）分析如下所示的Java代码，其中this关键字的意思是( )。 public class Test { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; //this关键字所在的行 } } Class Main{ Public static void main(String []args){ Test T1 = new Test(); T1.setname(“zhangsan”); } }
- 分析下面的程序，输出的结果是？ public class Test { public static void main(String[] args) { final Person p = new Person("张三", 23); p.setName("李四"); p.setAge(24); System.out.println(p); } } class Person { private String name; private int age; public Person() { super(); } public Person(String name, int age) { super(); this.name = name; this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public String toString() { return "我的姓名是:" + name + ",我的年龄是:" + age ; } }
- 在以下代码中，（ ）是类Teacher的方法。 public class Teacher { int age=33; private string name; public string Name { get{return name;} set{name=value;} } public void SaySomething（）{ //….. } ｝
- 阅读下面代码： Person 类： public class Person { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } } Servlet1: request.getSession().setAttribute("name","zhangsan"); Person p = new Person(); p.setName("lisi"); request.getSession().setAttribute("person",p); Servlet2: String name1 = (String)request.getSession().getAttribute("name"); Person p = (Person)request.getSession().getAttribute("person"); response.getWriter().write(name1); if(p!=null)response.getWriter().write(p.getName()); 浏览器先访问Servlet1，再去访问Servlet2，输出的结果是：（）
- 在以下代码中，（ ）是类Teacher的方法。 public class Teacher { int age=33; private string name; public string Name{ get{return name;} set{name=value;} } public void SaySomething（）{ //….. }｝ A: Name B: name C: age D: SaySomething
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下列程序的运行结果是（ ）class Demo{private String name;Demo(String name){this.name = name;}private static void show(){System.out.println(name)}public static void main(String[] args){Demo d = new Demo(“lisa”);d.show();}}
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【填空题】public class ThisTest{ private String name; private int age; public ThisTest() { System.out.println("产生一个新的Person对象。"); } public ThisTest (String name, int age) { this(); this.name = name; this.age = age; } public String getInf() { return "姓名:" + name + ",年龄:" + age; } public static void main(String[] args) { ThisTest per = new ThisTest("张三", 20); System.out.println(per.getInf()); } } 运行结果为:____
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在C#中,下列结构或者类定义正确的是（选一项） A: public struct Person{ string name； int age； public void ShowName(){ Console.WriteLine(name)； }} B: public struct Person{ string name； int age； public Person(){ Conssole.WriteLine(name)； }} C: public class Person{ string name； int age； public Person(){ Conssole.WriteLine(name)； }} D: public class Person{ string name； int age； public Person(string name){ Conssole.WriteLine(name)； }}
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以下代码执行后的结果是: public class Person { String name = “小芳”; public Person(String name) { name = “小兰”; } public void show() { this.name = “小翠”; } public static void main(String[] args) { Person p = new Person(“小凤”); System.out.print(p.name); p.show(); System.out.print(p.name); } }
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在c#代码中，_______是类Teacher的属性。public class Teacher{ int age=13; private string Name{ get{return name;} set{return name;} } public void SaySomething(){ //… }} A: name B: Name C: age D: SaySomething