How do you convert a String into a character array in Java?

• A. char s1[] = String.toCharArray()
• B. char[] ch = s1.toCharArray()
• C. ch = split(s1)
• D. char[] ch = new char[s1.length()]

Answer: (B)

To convert a String into a character array in Java, the correct method is indeed utilizing the toCharArray() method from the String class. When you call s1.toCharArray(), where s1 is an instance of a String, it creates a new character array that contains the sequence of characters in the String. This method is straightforward and efficient for extracting each character from the String and storing it in an array format.

In this case, the line of code char[] ch = s1.toCharArray() effectively assigns the resulting character array to the variable ch. It directly leverages the built-in functionality provided by the String class, ensuring that every character from the String is accurately represented in the array.

The other choices do not fulfill the requirement of converting a String to a character array correctly. For instance, using String.toCharArray() is incorrect because it would attempt to call a static method on a class rather than an instance of a String, which is not valid in Java. The option involving split(s1) does not apply here because split() is used to divide a String into parts based on a delimiter, not to convert it into an array of characters. Lastly, initializing a new character