Add an element to an array. - Java Collection Framework

Java examples for Collection Framework:Array Auto Increment

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Description

Add an element to an array.

Demo Code

/**/*from   w ww. j a v a  2s.  c o  m*/
    BigSlice Slicing Framework by Longevity Software LLC d.b.a. Terawatt Industries
    is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License.
    Based on a work at https://github.com/Terawatt-Industries/bigslice.
    Permissions beyond the scope of this license may be available at http://terawattindustries.com.

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String[] array = new String[] { "1", "abc", "level", null,
                "java2s.com", "asdf 123" };
        String s = "java2s.com";
        System.out.println(java.util.Arrays.toString(addToArray(array, s)));
    }

    /**
     * Add an element to an array.
     * 
     * @param array
     * @param s
     * @return
     */
    public static String[] addToArray(String[] array, String s) {
        String[] ans = null;
        if (0 == array.length) {
            ans = new String[1];
        } else {
            ans = new String[array.length + 1];
        }
        System.arraycopy(array, 0, ans, 0, array.length);
        ans[ans.length - 1] = s;
        return ans;
    }

    /**
     * Add an element to an array.
     * 
     * @param array
     * @param val
     * @return
     */
    public static int[] addToArray(int[] array, int val) {
        int[] ans = null;
        if (0 == array.length) {
            ans = new int[1];
        } else {
            ans = new int[array.length + 1];
        }
        System.arraycopy(array, 0, ans, 0, array.length);
        ans[ans.length - 1] = val;
        return ans;
    }
}

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