Java如何刪除數組中的元素？

Java中，如何刪除數組元素？

示例

以下示例顯示如何從數組中刪除元素。

package com.yiibai; import java.util.ArrayList; public class RemoveArrayElement { public static void main(String[] args) { ArrayList objArray = new ArrayList(); objArray.clear(); objArray.add(0, "0th element"); objArray.add(1, "1st element"); objArray.add(2, "2nd element"); System.out.println("Array before removing an element" + objArray); objArray.remove(1); objArray.remove("0th element"); System.out.println("Array after removing an element" + objArray); } } 

Java

執行上面示例代碼，得到以下結果 -

Array before removing an element[0th element, 1st element, 2nd element]
Array after removing an element[2nd element]

Shell

示例2

數組刪除的另一個示例示例

package com.yiibai; import java.util.*; public class RemoveArrayElement2 { public static void main(String[] args) { ArrayList<Integer> arr = new ArrayList<Integer>(5); arr.add(220); arr.add(115); arr.add(320); arr.add(145); System.out.println("Size of list: " + arr.size()); for (Integer number : arr) { System.out.println("Number = " + number); } arr.remove(2); System.out.println("After remove, Size of list: " + arr.size()); for (Integer number : arr) { System.out.println("Number = " + number); } } } 

Java

執行上面示例代碼，得到以下結果 -

Size of list: 4
Number = 220
Number = 115
Number = 320
Number = 145
After remove, Size of list: 3
Number = 220
Number = 115
Number = 145