Java编程题

Posted 2023-03-22

java写一个猴子类,必须提供它的名称，种类，体重，出生年月，生活地点等属性以及吃香蕉、跑动等方法，要求必须继承一个基类（基类自定义，子类重载基类的某些方法）;

参考技术A 第一题：<pre t="code" l="java">

public class People

private String name;

public String speak()
return "";

public String getName()

return name;


public void setName(String name)

this.name = name;




public class American extends People

private String name;

@Override
public String speak()

return "i’m speak English";


public String getName()

return name;


public void setName(String name)

this.name = name;




public class Chinese extends People

private String name;

@Override
public String speak()

return "我说中国话";


public String getName()

return name;


public void setName(String name)

this.name = name;




import java.util.HashMap;
import java.util.Map;

public class Demo01

public static Map<?, ?> recruit(People[] people)

Map<String, String> resultMap = new HashMap<String, String>();
for (People p : people)

if ("我说中国话".equals(p.speak()))
resultMap.put(p.getName(), "中国人");
else
resultMap.put(p.getName(), "美国人");

return resultMap;


public static void main(String[] args)

Chinese chinese01 = new Chinese();
chinese01.setName("小明");
Chinese chinese02 = new Chinese();
chinese02.setName("小红");
American american = new American();
american.setName("Tom");

People[] peoples = new People[] chinese01, chinese02, american ;
Map<String, String> resultMap = new HashMap<String, String>(3);
resultMap = (Map<String, String>) recruit(peoples);
for (Map.Entry<String, String> entry : resultMap.entrySet())

String key = entry.getKey();
String value = entry.getValue();
System.out.println(key + ":" + value);





/*
运行结果
Tom:美国人
小明:中国人
小红:中国人
*/ 第二题：<pre t="code" l="java">public class Engineer

private String name;

public String writerCode()

return "";


public String getName()

return name;


public void setName(String name)

this.name = name;




public class JavaEngineer extends Engineer

private String name;

@Override
public String writerCode()

return "在写Java代码";


public String getName()

return name;


public void setName(String name)

this.name = name;




public class iosEngineer extends Engineer

private String name;

@Override
public String writerCode()

return "在写iOS代码";


public String getName()

return name;


public void setName(String name)

this.name = name;




import java.util.HashMap;
import java.util.Map;

public class Demo02

public static Map<?, ?> recruit(Engineer[] Engineer)

Map<String, String> resultMap = new HashMap<String, String>();
for (Engineer e : Engineer)

if ("在写Java代码".equals(e.writerCode()))
resultMap.put(e.getName(), "Java工程师");
else
resultMap.put(e.getName(), "iOS工程师");

return resultMap;


public static void main(String[] args)

JavaEngineer JavaEngineer01 = new JavaEngineer();
JavaEngineer01.setName("Sunny");
JavaEngineer JavaEngineer02 = new JavaEngineer();
JavaEngineer02.setName("Jain");
iOSEngineer iOSEngineer = new iOSEngineer();
iOSEngineer.setName("Tony");

Engineer[] Engineers = new Engineer[] JavaEngineer01, JavaEngineer02, iOSEngineer ;
Map<String, String> resultMap = new HashMap<String, String>(3);
resultMap = (Map<String, String>) recruit(Engineers);
for (Map.Entry<String, String> entry : resultMap.entrySet())

String key = entry.getKey();
String value = entry.getValue();
System.out.println(key + ":" + value);




/*
运行结果：
Sunny:Java工程师
Jain:Java工程师
Tony:iOS工程师
*/