Java创建学生类student构造方法的作用

package java19;

public class Studene {
 //定义私有变量
	private String name;
	private float SHUXUE;
	private float YUWEN;
	private float YINGWYU;

	
	void setname(String name) {
		thisname=name;
	}
	void setsYUWEN(float YUWEN) {
		thisYUWEN=YUWEN;
	}
	void setsSHUXUE(float SHUXUE) {
		thisSHUXUE=SHUXUE;
	}
	void setsYINGWYU(float YINGWYU) {
		thisYINGWYU=YINGWYU;
	}
	
	//公有的get方法,间接为成员变量赋值
	public String getname() {
		return name;
	}
	float getYUWEN() {
		return YUWEN;
	}
	float getSHUXUE() {
		return SHUXUE;
	}
	float getYINGWYU() {
		return YINGWYU;
	}
	Studene (String name,float SHUXUE,float YUWEN,float YINGWYU) {
		thisname=name;
		thisSHUXUE=SHUXUE;
		thisYUWEN=YUWEN;
		thisYINGWYU=YINGWYU;
	}
	
	// 计算平均分方法
	public void name() {
		
	} void average() {
		float average=(SHUXUE+YUWEN+YINGWYU)/3;
		Systemoutprint("姓名："+name+"   "+SHUXUE+"   "+YUWEN +"   "+ YINGWYU+"   " +average+"   ");
	}
	//计算总分方法
	public void num() {
		float num = SHUXUE+YUWEN+YINGWYU;
		Systemoutprintln(num);
		
	}
	
}
	
	
text
package java19;
import java19Studene;
public class Test1 {
	public static void main(String[] args) {
		Studene s=new Studene("彭于晏",905f,807f,908f);//创建对象并赋值
		saverage();//调用s的对象的average方法
		snum();//调用s方法的num方法
		
		Studene s1=new Studene("吴彦祖",965f,897f,708f);
		s1average();
		s1num();
		
		Studene s2=new Studene("陈冠希",865f,497f,908f);
		s2average();
		s2num();
		
		
		
	}
}