int x = 3;//æµè¯æ°å int[] a = new int[]{1,2,3,4}; int[] b = new int[]{3,4,5}; boolean flag = false;//æ 示 æ¯å¦å å«,false为ä¸å å«ï¼true为å å« for(int i=0;i<a.length;i++){ for(int j=0;j<b.length;j++){ if(a[i] == x && b[j] == x){ flag = true; } } } if(flag){ System.out.println("æ°ç»aåæ°ç»b é½å å«æ°åï¼"+x);