How to put a string into an array in Java?

To place a string into an array, you can follow these steps:

1. Create a new array with a length equal to the size of the string.
2. Convert to an array of characters.
3. Copy the elements of an array into another array using System.arraycopy().

Here is an example code:

public class StringToArray {
    public static void main(String[] args) {
        String str = "Hello, World!";
        char[] charArray = str.toCharArray();

        // 创建一个新的数组，大小为字符串的长度
        char[] newArray = new char[str.length()];

        // 将字符数组复制到新的数组中
        System.arraycopy(charArray, 0, newArray, 0, str.length());

        System.out.println("原始字符串: " + str);
        System.out.println("新的数组: " + Arrays.toString(newArray));
    }
}

Output result:

原始字符串: Hello, World!
新的数组: [H, e, l, l, o, ,,  , W, o, r, l, d, !]

In the example above, we first convert the string into a character array, then create a new array, and finally copy the character array into the new array using the System.arraycopy() method.