java中的构造方法实例

package com.neusoft.xf;

class Student{

private String name;

private String studo;

private float english;

private float math;

private float computer;

public Student(String n,String s,float e,float m,float c){

this.setName(n); //为什么要有这一段？，this.setName()是做什么用的？

this.setStudo(s);

this.setEnglish(e);

this.setMath(m);

this.setComputer(c);

}

public void setName(String n){

name = n;

}

public String getName(){

return name;

}

public void setStudo(String s){

studo = s;

}

public String getStudo(){

return studo;

}

public void setEnglish(float e ){

english =e;

}

public float getEnglish(){

return english;

}

public void setMath(float m){

math = m;

}

public float getMath(){

return math;

}

public void setComputer(float c){

computer = c;

}

public float getComputer(){

return computer;

}

public float sum(){

return math+computer+english;

}

public float avg(){

return (math+english+computer)/3;

}

public float max(){

float max = math;

max=max>computer?max:computer;

max =max>english?max:english;

return max;

}

public float min(){

float min= math;

min = min <computer?min:computer;

min = min <english?min:english;

return min;

}

}

public class Example {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

Student stu =null;

stu =new Student("大白菜","666",89.0f,90.0f,120.0f);//这里的方法中的值是人工输入的，为什么是在这输入？

System.out.println("最大值是"+stu.max());

System.out.println("总值"+stu.sum());

System.out.println("均值"+stu.avg());

System.out.println("最小值"+stu.min());

}

}