student学生类的封装和构造方法的赋值

学生类student
package zhang7;

public class student {
	private String name;
	private float score;
	
	void setname(String name) {
		this.name=name;
	}
	
	void setscore(float score) {
		this.score=score;
	}
	
	String getname() {
		return name;
	}
	
	float getscore() {
		return score;
	}
	
	student(){
		
	}
	
    student(String name,float score){
		this.name=name;
		this.score=score;
	}
    
    void show(){
    	System.out.println("姓名："+name+" 成绩："+score);
    }
	
	

}

测试主类：
package zhang7;
import zhang7.student;

public class test {
	
	public static void main(String[] args) {
		student s1=new student("zhangsan",90.5f);
		s1.show();
		student s2=new student();
		s2.setname("lishi");
		s2.setscore(80.5f);
		s2.show();
		float fen=(s1.getscore()+s2.getscore())/2;
	
		
	}

}