定义一个Student数组,其中包括性别,姓名,学号,还有对应的3门课的成绩和学分,试编程计算这3门课程的学积分，并输出结果。

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public class Student { private int xuehao; private String xingming; private String xingbie; private int shuxue; private int yuwen; private int yingyu; public int getShuxue() { return shuxue; } public void setShuxue(int shuxue) { this.shuxue = shuxue; } public String getXingbie() { return xingbie; } public void setXingbie(String xingbie) { this.xingbie = xingbie; } public String getXingming() { return xingming; } public void setXingming(String xingming) { this.xingming = xingming; } public int getXuehao() { return xuehao; } public void setXuehao(int xuehao) { this.xuehao = xuehao; } public int getYingyu() { return yingyu; } public void setYingyu(int yingyu) { this.yingyu = yingyu; } public int getYuwen() { return yuwen; } public void setYuwen(int yuwen) { this.yuwen = yuwen; } public int average(int x,int y,int z){ return (x+y+z)/3; }}