菜鸟求大神指导_J2SE

初学者求大神指导
小弟初学Java遇到一个难题，求大神指导。

题目：从键盘输入三个数，并赋值，比较之后按从小到大的顺序输出。

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用Scanner，其它的自己练一下手
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Java code

import java.util.Scanner;public class Test {    public static void main(String[] args) {        Scanner scan = new Scanner(System.in);        int[] a = new int[3];        a[0] = scan.nextInt();        a[1] = scan.nextInt();        a[2] = scan.nextInt();        sort(a);        show(a);    }    public static void sort(int[] a){ //冒泡排序        int n = a.length;        for (int i = n; i > 1; i--){            for (int j = 0; j < i-1; j++) {                if ( a[j] > a[j+1]) {                    int x = a[j];                    a[j] = a[j+1];                    a[j+1] = x;                }            }        }    }    public static void show(int[] a){        for (int i = 0; i < a.length; i++) {            System.out.print(a[i]+" ");        }        System.out.println();    }}
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import java.util.Scanner;
public class SortNum {
	public static void main(String[] args) {
		int a, b, c;
		int t;  //临时变量
		Scanner input = new Scanner(System.in);
		System.out.println("请输入a的值：");
		a = input.nextInt();
		System.out.println("请输入b的值：");
		b = input.nextInt();
		System.out.println("请输入c的值：");
		c = input.nextInt();
		System.out.println("排序前" + a + "  " + b + "   " + c);
		if (a > b) {
			t = a;
			a = b;
			b = t;
		}
		if (a > c) {
			t = a;
			a = c;
			c = t;
		}
		if (b > c) {
			t = b;
			b = c;
			c = t;
		}
		System.out.println("排序后" + a + "  " + b + "   " + c);

	}
}
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PS:记得要结贴噢。