如何在Java中将字符串转换为数组

Sometimes we have to split String to array based on delimiters or some regular expression. For example, reading a CSV file line and parsing them to get all the data to a String array. In this tutorial, we will learn how to convert String to Array in Java program.

有时我们必须根据定界符或某些正则表达式将String拆分为数组 。 例如，读取CSV文件行并将其解析以将所有数据获取到String数组。 在本教程中，我们将学习如何在Java程序中将String转换为Array。

Java中的字符串到数组 (String to Array in Java)

String class split(String regex) can be used to convert String to array in java.

字符串类split(String regex)可用于在Java中将String转换为数组。

If you are working with , you can also use Pattern class split(String regex) method.

如果使用 ，则还可以使用Pattern类split(String regex)方法。

Let’s see how to convert String to an array with a simple java class example.

让我们看看如何通过一个简单的Java类示例将String转换为数组。

package com.journaldev.util;

import java.util.Arrays;
import java.util.regex.Pattern;

public class StringToArrayExample {

    /**
     * This class shows how to convert String to String Array in Java
     * @param args
     */
    public static void main(String[] args) {
        String line = "My name is Pankaj";
        //using String split function
        String[] words = line.split(" ");
        System.out.println(Arrays.toString(words));
        //using java.util.regex Pattern
        Pattern pattern = Pattern.compile(" ");
        words = pattern.split(line);
        System.out.println(Arrays.toString(words));
    }
}

The output of the above program is:

上面程序的输出是：

[My, name, is, Pankaj]
[My, name, is, Pankaj]

Convert String To Array in Java

用Java将字符串转换为数组

Note that Java provides a legacy class StringTokenizer also but you should not use it because it doesn’t have an option for a regular expression and using it is confusing.

请注意，Java还提供了旧式类**StringTokenizer，**但您不应使用它，因为它没有用于正则表达式的选项，使用它会造成混淆。

We can use Java regular expressions also to split String into String array in java, learn more about .

我们还可以使用Java正则表达式在Java中将String拆分为String数组，了解有关更多信息。

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