请给我关于“有五个学生，每个学生有3门课的成绩，从键盘输入以上数据（包括学号，姓名，三门课成绩），计算出平均成绩，并把学号，姓名，三门课成绩及平均分输出。”的完整的Java代码

以下是完整的Java代码：

import java.util.Scanner;

public class StudentGrades {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String[] name = new String[5];
        int[][] grades = new int[5][3];
        int[] id = new int[5];
        double[] average = new double[5];

        for (int i = 0; i < 5; i++) {
            System.out.print("Enter student " + (i+1) + "'s ID: ");
            id[i] = input.nextInt();
            System.out.print("Enter student " + (i+1) + "'s name: ");
            name[i] = input.next();
            System.out.print("Enter student " + (i+1) + "'s grades for three courses (separated by spaces): ");
            grades[i][0] = input.nextInt();
            grades[i][1] = input.nextInt();
            grades[i][2] = input.nextInt();

            // Calculate average grade
            double sum = grades[i][0] + grades[i][1] + grades[i][2];
            average[i] = sum / 3;
        }

        // Output results
        System.out.println("ID\tName\tCourse 1\tCourse 2\tCourse 3\tAverage");
        for (int i = 0; i < 5; i++) {
            System.out.println(id[i] + "\t" + name[i] + "\t" + grades[i][0] + "\t\t" + grades[i][1] + "\t\t" + grades[i][2] + "\t\t" + average[i]);
        }
    }
}

该代码通过循环遍历5个学生的信息，从键盘输入学号、姓名、以及三门课的成绩，并计算出平均成绩。最后，输出学号、姓名、三门课成绩及平均分。