I have an array for example:
String [][] test = {{\"a\",\"1\"},
{\"b\",\"1\"},
{\"c\",\"1\"}};
Can
You could set the entry in the array to null (test[0][1] = null;). However, "removing" the item such that the array will have one element less than before is not doable without recreating the array. If you plan to change data in the data structure regularly an ArrayList (or another Collection class depending on your needs) might be more convenient.