class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass exyends BaseClass { private float x = 2.0f; //insert code here 8. } Which two are valid examples of method overriding?()
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class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here 16. } Which two are valid examples of method overriding?()
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class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here } Which two are valid examples of method overriding?()
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1. abstract class AbstractIt { 2. abstract float getFloat(); 3. } 4. public class AbstractTest extends AbstractIt { 5. private float f1 = 1.0f; 6. private float getFloat() { return f1; } 7. } What is the result?()
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以下代码运行输出是() class Man { private String name = Jack
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以下代码运行输出是()class Man {private String name = \Jack
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有以下程序:include<iostream>using namespace std;class sample{private:int n;public:sample(
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3、下面程序段中,说法正确的是() class location{ public : int GetX(); }; class rectangle:private location { public: int GetW(); };
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4、以下两个类在同一个Java源程序中, Class Adder { private int x; private int increase(int basic) { return basic+x; } } Class User { void use(int input) { Adder adder=new Adder(); int result=adder.increase(6); } } 红色的语句是不合法的。()
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四、应用题 2 补全代码,使其实现下面用户信息登记页面和输入校验(18分) UserBean.java public class UserBean { private String username; private String password; private int age = 0; private Date birthday = new Date(); //Getter 和 Setter函数 } RegisterAction.java public class RegisterActionextends ActionSupport { private UserBean userbean; //Getter 和 Setter函数 //Execute函数 } Register.jsp <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags"
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