java--面向对象之继承3-优快云博客

本文通过Java代码展示了如何定义一个基本的`human`类，并通过继承创建`Chinese`和`Englishman`子类来实现不同文化背景的人名显示方式。`Chinese`类按常规顺序显示姓名，而`Englishman`类则先显示姓氏再显示名字。

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human:

package JC2;

public class human {
private String firstName;
private String lastName;
public human(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}

public String getFirstName() {
return firstName;
}

public String getLastName() {
return lastName;
}

public void display(){
System.out.println(this.firstName+this.lastName);
}
}

Chinese:

package JC2;

public class Chinese extends human {

public Chinese(String firstName, String lastName) {
super(firstName, lastName);
}
/* public void display(){
System.out.println(super.getFirstName()+super.getLastName());
}*/

@Override
public void display() {
System.out.println(super.getFirstName()+super.getLastName());
}

}

Englishman:

package JC2;

public class Englishman extends human {

public Englishman(String firstName, String lastName) {
super(firstName, lastName);
}
public void display(){
System.out.println(super.getLastName()+super.getFirstName());
}

}

test:

package JC2;

import org.junit.Test;

public class jTest {
@Test
public void test1(){
human h=new human("张","三");
Chinese c=new Chinese("张","三");
Englishman e=new Englishman("张","三");
h.display();
c.display();
e.display();
}
}