String[] str1 = {"Hello","world","java"}; String[] str2 = {"Veriable","syntax","interator"}; int str1Length = str1.length; int str2length = str2.length; str1 = Arrays.copyOf(str1, str1Length+str2length);//数组扩容 System.arraycopy(str2, 0, str1, str1Length, str2length); System.out.println(Arrays.toString(str1));