这个JAVA程序提示错误 Illegal modifier for parameter isDescending; on

这个JAVA程序提示错误 Illegal modifier for parameter isDescending; only final is permittedpublic static boolean isAscending(int[] b){static boolean isDescending(int[] a) {for(int i=1;ia[i-1])return false;return true;}public static boolean isSorted(int[] a){boolean m = false;for(int i=1;ia[i-1]||a[i]