How-to articles, tricks, and solutions about STRING

To convert a string to a hexadecimal string in Java, you can use the encodeHexString method of the org.apache.commons.codec.binary.Hex class.

In Python, you can use the bool() function to convert a string to a boolean.

To convert a string to a character array in Java, you can use the toCharArray method of the String class. This method returns a new character array that represents the same sequence of characters as the string.

You can use the .count() method to count the number of occurrences of a character in a string.

In PHP, you can use the str_replace function to delete a particular word from a string.

To determine if a string is an integer in Java, you can use the isDigit() method of the Character class to check if each character in the string is a digit. Here's an example:

In Java, there is no native support for multiline strings.

Yes, Python has a string method called str.__contains__() that allows you to check if a string contains another string.

Here is an example of how you can filter a pandas DataFrame by substring criteria:

To get an OutputStream into a String, you can use a ByteArrayOutputStream as the OutputStream and then use the toString() method of the ByteArrayOutputStream to get the contents of the stream as a string.

In PHP, you can use the $ operator to access an object's properties by name.

In Java, you can get a character at a specific index in a string using the charAt() method of the String class. This method takes an index as an argument and returns the character at that index.

You can use the preg_match_all function in PHP to match all the words in a string and then use the substr function to get the first letter of each word.

To check if a single character appears in a string in Java, you can use the indexOf method of the String class.

To pad a string in Java, you can use the String.format() method and specify a width for the string.

java.lang.NumberFormatException: For input string: "N/A" occurs when you try to parse a string that cannot be converted to a number, such as the string "N/A".

You can use the print() function in Python and use the + operator to concatenate a string and a variable.

There are several ways to remove a substring from a given string in Java. Here are a few options:

There are several ways to remove a portion of a string in PHP.

You can use the "+" operator to concatenate two strings in Python.

To convert a String to an InputStream in Java, you can use the ByteArrayInputStream class, which allows you to create an InputStream from a byte array.

To convert a String to an int in Java, you can use the parseInt() method of the Integer class. Here's an example:

Here is an example of how you might convert all strings in a list of lists to integers:

To convert an int to a String in Java, you can use the Integer.toString() method. For example

Here is one way you could do it in Java: