java对数组进行排序的方法

public class Test1 {   public static void showArray(int[] array) {     for (int n = 0; n < array.length; n++) {       System.out.print(array[n]);       System.out.print(" ");     }     System.out.println();   }   public static int[] bubbleSort(int[] before) {     int t;     for (int i = 0; i < before.length; i++) {       for (int j = 0; j < before.length - i - 1; j++) {         if (before[j] > before[j + 1]) {           t = before[j];           before[j] = before[j + 1];           before[j + 1] = t;         }       }     }     return before;   }   public static void main(String[] args) {     int[] a = { 12, 24, 25, 4, 9, 68, 45, 7 };     System.out.println("排序前：");     showArray(a);     int[] b = bubbleSort(a);     System.out.println("排序后：");     showArray(b);   } }