It checks whether the string contains the specified sequence of char values. If yes then it returns true else false. It throws NullPointerException of ‘s’ is null. This method searches the specified ...

System.out.println(stringSize); //This Java String length example prints out 25 How do I remove whitespace from a Java String’s length? In the above example of Java’s String length method, the output ...

This method returns true if the given string has 0 length. If the length of the specified Java String is non-zero then it returns false. ## public static String join () This method joins the given ...

The Long.parseLong () method is not deprecated like the Long constructor. Java String to long example The following String to long example program converts the text String 90210 to a long, and then ...

When you write String::toUpperCase, Java binds each element of the stream (String object) to the toUpperCase() method. This means String::toUpperCase is interpreted as s -> s.toUpperCase(), where ...

To demonstrate the utility of the Introduce Parameter Object refactoring, let’s first look at the example from the last post which uses numerous String and boolean parameters in a method call.