java删除数组的空字符串 java删除数组中的一个元素

在Java中，如何删除数组元素？

示例

以下示例显示如何从数组中删除元素。

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);
}
}

执行上面示例代码，得到以下结果 -

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

Array after removing an element[2nd element]

示例2

数组删除的另一个示例示例

package com.yiibai;
import java.util.*;
public class RemoveArrayElement2 {
public static void main(String[] args) {
ArrayList arr = new ArrayList(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);
}
}
}

执行上面示例代码，得到以下结果 -

Size of list: 4

Number = 220

Number = 115

Number = 320

Number = 145

After remove, Size of list: 3

Number = 220

Number = 115

Number = 145