In order to swap two variable using single expression or in single line we could use bitwise XOR operator of Java. As we now that in Java XOR functions as XOR of two numbers a and b returns a number which has all the bits as 1 wherever bits of a and b differs. So for swapping of two variable we would use this operator as Example Live Demo public class SwapUsingBitwise { public static void main(String[] args) { int a = 8 ; int b = 10; ... Read More

In order to swap two strings i.e interchange the content of two strings we will use sub string method of string class in Java.First of all get the length of both strings before making any change in any of string.Now modify one string as concatenate both strings and assign to one string. After this use sub string method of String class using begin index as length of new modified string 1 and last index as initial length of string 1.This will give us the swiped string 1 which contain content of string 2. Now to get swiped string 2 again ... Read More

The FILTER_SANITIZE_SPECIAL_CHARS constant filter HTML-escapes special characters.FlagsFILTER_FLAG_STRIP_LOW − Strip characters with ASCII value below 32FILTER_FLAG_STRIP_HIGH − Strip characters with ASCII value above 32FILTER_FLAG_ENCODE_HIGH − Encode characters with ASCII value above 32ReturnThe FILTER_SANITIZE_SPECIAL_CHARS constant does not anything.Example Live DemoOutputThe following is the output.string(43) "Favorite Sports is Football & Cricket?"

Stream is a new abstract layer introduced in Java 8. Using stream, you can process data in a declarative way similar to SQL statements. For example, consider the following SQL statement. SELECT max(salary), employee_id, employee_name FROM Employee The above SQL expression automatically returns the maximum salaried employee's details, without doing any computation on the developer's end. Using collections framework in Java, a developer has to use loops and make repeated checks. Another concern is efficiency; as multi-core processors are available at ease, a Java developer has to write parallel code processing that can be pretty error-prone. To resolve ... Read More

The FILTER_SANITIZE_NUMBER_INT constant deletes all illegal characters from a number.ReturnThe FILTER_SANITIZE_NUMBER_INT constant does not return anything.Example Live DemoOutputThe following is the output.string(5) "4-5+9"

In Java, the behaviour of any variable or method is defined by the keyword used in front of its declaration. One of the non-access modifiers is static, which can be used with both methods and variables. The static methods are defined at the class level and can be accessed without creating an instance of the class, while instance methods require an object of the class for accessibility. Static methods exist as a single copy for the entire class, whereas instance methods exist as multiple copies, depending on the number of instances created for that particular class. Static methods cannot directly ... Read More

The FILTER_SANITIZE_NUMBER_FLOAT constant deletes all illegal characters from a float number.FlagsFILTER_FLAG_ALLOW_FRACTION − Allows fraction separatorFILTER_FLAG_ALLOW_THOUSAND − Allows thousand separatorFILTER_FLAG_ALLOW_SCIENTIFIC − Allows scientific notationReturnThe FILTER_SANITIZE_NUMBER_FLOAT constant does not return anything.ExampleThe following is an example that use FILTER_FLAG_ALLOW_FRACTION flag. Live DemoOutputThe following is the output.string(8) "3-1+2.56"Let us see another example. Here, FILTER_FLAG_ALLOW_THOUSAND flag is used −Example Live DemoOutputHere is the output.string(8) "1-4+25,6"

The FILTER_SANITIZE_MAGIC_QUOTES constant performs the addslashes() function to a string. It adds backslashes in front of predefined characters i.e. single quote ('), double quote ("), backslash (\), NULL.ReturnThe FILTER_SANITIZE_MAGIC_QUOTES constant does not return anything.Example Live Demo

The FILTER_SANITIZE_ENCODED constant encodes special characters.Flags and OptionsFILTER_FLAG_STRIP_LOW − Remove characters with ASCII value less than 32FILTER_FLAG_STRIP_HIGH − Remove characters with ASCII value greater than 127FILTER_FLAG_ENCODE_LOW − Encode characters with ASCII value less than 32FILTER_FLAG_ENCODE_HIGH − Encode characters with ASCII value greater than 127ReturnThe FILTER_SANITIZE_ENCODED constant does not return anything.ExampleThe following is an example that use FILTER_FLAG_ENCODE_HIGH flag to encode characters with ASCII value > 127Example Live DemoOutputThe following is the output.www.example.comLet us see another example.Example Live DemoOutputHere is the output.example.comRead More

The FILTER_SANITIZE_EMAIL constant deletes all illegal characters from an email address.ReturnThe FILTER_SANITIZE_EMAIL constant does not return anything.ExampleOutputThe following is the output.abc@demo.com