1) 使用apache common包
public static void main(String[] args) { String[] s1 = new String[]{"a", "b", "c"}; String[] s2 = new String[]{"d", "e", "f"}; String[] result = ArrayUtils.addAll(s1, s2); System.out.println(Arrays.toString(result)); int [] int1 = new int[]{1,2,3}; int[] int2 = new int[]{4,5,6}; int[] result2 = ArrayUtils.addAll(int1, int2); System.out.println(Arrays.toString(result2));
2) 单纯的编写方法
public static void main(String[] args) { String[] s1 = new String[]{"a", "b", "c"}; String[] s2 = new String[]{"d", "e", "f"}; String[] s3 = new String[]{"g", "h", "i"}; String[] result = joinArrayGeneric(s1, s2, s3); System.out.println(Arrays.toString(result)); int[] int1 = new int[]{1, 2, 3}; int[] int2 = new int[]{4, 5, 6}; int[] int3 = new int[]{7, 8, 9}; int[] result2 = joinArray(int1, int2, int3); System.out.println(Arrays.toString(result2)); } static <T> T[] joinArrayGeneric(T[]... arrays) { int length = 0; for (T[] array : arrays) { length += array.length; } //T[] result = new T[length]; final T[] result = (T[]) Array.newInstance(arrays[0].getClass().getComponentType(), length); int offset = 0; for (T[] array : arrays) { System.arraycopy(array, 0, result, offset, array.length); offset += array.length; } return result; } static int[] joinArray(int[]... arrays) { int length = 0; for (int[] array : arrays) { length += array.length; } final int[] result = new int[length]; int offset = 0; for (int[] array : arrays) { System.arraycopy(array, 0, result, offset, array.length); offset += array.length; } return result; } //create other overloaded primitive type - long, double... //static long[] joinArray(long[]... arrays) }