4-17 封装一个学生类，有姓名，有年龄，有性别，有英语成绩，数学成绩，语文成绩，封装方法, 求总分，平均分，以及打印学生的信息。

package LXT;
public class zuoye2 {
	public static void main(String[] args) {
		  Student s1 = new Student();
		        s1.setName("老邓");
		        s1.setAge(18);
		        s1.setGender("男");
		        s1.setEnglish(100);
		        s1.setMath(99);
		        s1.setChinese(98);
		        
		        s1.study();
		        s1.sum();
		        s1.average();
	}
}

定义

class Student {
	private String name;
	private int age;
	private String gender;
	private double english;
	private double math;
	private double chinese;

get set

	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getGender() {
		return gender;
	}
	public void setGender(String gender) {
		this.gender = gender;
	}
	public double getEnglish() {
		return english;
	}
	public void setEnglish(double english) {
		this.english = english;
	}
	public double getMath() {
		return math;
	}
	public void setMath(double math) {
		this.math = math;
	}
	public double getChinese() {
		return chinese;
	}
	public void setChinese(double chinese) {
		this.chinese = chinese;
	}

打印输出

	
	public void study() {
		System.out.println("这位学生的姓名是:" + getName() + "\n\t" + "年龄:" + getAge() + "\n\t" + "性别:" + getGender() + "\n\t" + "英语成绩:" + getEnglish() + "\n\t" + "数学成绩:" + getMath() + "\n\t" + "语文成绩:" + getChinese() + "\n\t");
	}
	public void sum() {
		System.out.println("\t" + "总成绩:" + (getEnglish() + getMath() + getChinese()));
	}
	public void average() {
		System.out.println("\t" + "平均分:" + (getEnglish() + getMath() + getChinese())/3);
	}
	
}