Interpretation of Java documentation: Functional analysis of toHexString() method of Short class

Interpretation of Java documentation: Function analysis of toHexString() method of Short class

In Java programming, we often need to convert and process numerical values. The Short class is a wrapper class in Java, used to process short type data. Among them, the Short class provides a toHexString() method for converting short type data into a string in hexadecimal form. This article will analyze the functions of the toHexString() method and provide specific code examples.

The declaration of the toHexString() method is as follows:

public static String toHexString(short s)

This method accepts a short type parameter s, and then converts s into a string in hexadecimal form and returns it. Below is a detailed analysis of this method.

1. Function description:
   The main function of the toHexString() method is to convert short type data into a string in hexadecimal form. The hexadecimal representation method uses 0-9 and A-F to represent the numbers 0-15, and the corresponding digits are 4 digits. Therefore, for a short type of data, up to four hexadecimal digits are needed to represent it.
2. Parameter description:
   The toHexString() method has only one parameter, which is the short type data s to be converted. The value range of this parameter is -32768 to 32767, and the corresponding hexadecimal representation range is 0x8000 to 0x7FFF.
3. Return value description:
   toHexString() method returns a string representing the hexadecimal form of short type data.
4. Conversion rules:
   The toHexString() method converts short type data to a string in hexadecimal form according to the following rules:
5. First, convert short type data s to None Signed int type data to handle negative cases.
6. Then, convert the int type data into a string in hexadecimal form.
7. If the length of the converted string is less than 4 digits, 0 will be added in front to ensure that the length of the resulting string is 4 digits.
8. Finally, return the converted hexadecimal form string.

The following is a specific code example showing the use of toHexString() method:

public class ShortExample {
    public static void main(String[] args) {
        short num = 255;
        String hexString = Short.toHexString(num);
        System.out.println("十六进制表示：" + hexString);
    }
}

Run the above code, the output result is:

十六进制表示：00FF

In the code In the example, we assign the value of a short type variable num to 255. Then, use the toHexString() method of the Short class to convert num into a string in hexadecimal form. Finally, the output result is "00FF", which is the hexadecimal form of 255.

To sum up, the toHexString() method of the Short class can easily convert short type data into a string in hexadecimal form. Through this method, we can flexibly convert and process values. I hope the analysis and code examples in this article can help readers better understand and apply the toHexString() method.

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