Question

因此，如果您要添加字符串，则可以通过+=方法（我知道并使用atm）添加它们。但是如何删除字符串/字符串数组中的单词？

示例：我有一个字符串

String="Monday,Tuesday,Wednesday"

如何进入

String="Monday,Wednesday"

有什么帮助吗？

Answer 1

简单

只需使用

          yourString = yourString.replaceAll("the text to replace", "");  //the second "" show empty string so the text will get replace by empty string

最后你的字符串将包含你想要的文本：）

Answer 2

您可以使用replace方法。

String sentence = "Monday,Tuesday,Wednesday";
String replaced = sentence.replace("Tuesday,", "");

Answer 3

您可以使用＆＃34;公共字符串替换（char oldChar，char newChar）＆＃34;方法，如果你想删除＆＃34;星期二＆＃34;而不是第二个元素

https://stackoverflow.com/questions/16702357/how-to-replace-a-substring-of-a-string

Answer 4

我认为，我会将其用于简单，否则请转到其他建议的答案......

使用Arraylist存储天数：

ArrayList<String> days = new ArrayList<String>();
days.add("Monday");
days.add("Tuesday");
days.add("Wednesday");

用它来创建天数字符串：

        public String getDays() {

            String daysString = "";

            for (int i = 0; i < days.size(); i++) {
                if (i != 0)
                    daysString += ", ";
                daysString += days.get(i);
            }

            return daysString;
        }

无论何时你想删除使用

days.remove(1);

或

days.remove("Tuesday");

然后再次致电getDays();

IInd方法如果您只想使用字符串：

String list = "Monday,Tuesday,Wednesday";
System.out.println("New String : " + removeAtIndex(list, 1));

和

public String removeAtIndex(String string, int index) {
        int currentPointer = 0;
        int lastPointer = string.indexOf(",");
        while (index != 0) {
            currentPointer = string.indexOf(',', currentPointer) + 1;
            lastPointer = string.indexOf(',', lastPointer + 1);
            index--;
        }

        String subString = string.substring(currentPointer,
                lastPointer == -1 ? string.length() : lastPointer);

        return string.replace((currentPointer != 0 ? "," : "") + subString
                + (currentPointer == 0 ? "," : ""), "");
    }

Answer 5

使用正则表达式这样的东西：

String contents = "Monday,Tuesday,Wednesday";
contents = contents.replaceAll("[\\,]+Tuesday|^Tuesday[\\,]*", "");

删除字符串/字符串数组中的单词

5 个答案: