java定义学生类，并计算输出

以上为题目
package Third;

public class Student {
String sNO;
String sName;
String sSex;
int sAge;
int sJava;
public Student(String NO, String Name, String Sex, int Age, int Java) {
sNO = NO;
sName = Name;
sSex = Sex;
sAge = Age;
sJava = Java;
}

public String getNo() {
    return sNO;
}

public String getName() {
    return sName;
}
public String getSex() {
    return sSex;
}
public int getAge() {
    return sAge;
}
public int getJava() {
    return sJava;
}
public static void main(String[] args) {
    Student[] stu = new Student[5];
    stu[0] = new Student("0301","Alice","female",1,90);
    stu[1] = new Student("0302","Bob","male",2,91);
    stu[2] = new Student("0303","Tom","male",3,92);
    stu[3] = new Student("0304","Lily","female",4,93);
    stu[4] = new Student("0305","Sally","female",5,94);
    int sumJava = 0, maxJava = 0, minJava = 0;
    for(int i=0; i<stu.length; i++) {
        System.out.println("student"+i+": "+"学号是"+stu[i].getNo()+", 姓名是"+stu[i].getName()+", 性别是"+stu[i].getSex()+", 年龄是"+stu[i].getAge()+", Java课成绩是"+stu[i].sJava);
        if( i==0 ) {
            maxJava = stu[i].getJava();
            minJava = stu[i].getJava();
        }
        else {
            if( stu[i].getJava()>maxJava ) maxJava = stu[i].getJava();
            if( stu[i].getJava()<minJava ) minJava = stu[i].getJava();
        }
        sumJava += stu[i].getJava();
    }
    System.out.println("Java成绩平均值为"+sumJava*1.0×u.length+", Java最高成绩为"+maxJava+", Java最低成绩为"+minJava);
}

}
代码如下，大概是42行和52行有问题

把错误贴出来