Search⌘ K
Home
Courses
Learn Java Fundamentals

String Methods

Explore core Java string methods to manipulate text efficiently. Learn how to concatenate, compare, split, and extract substrings. Understand converting string cases and measuring length. This lesson equips you with essential skills to handle string data effectively in Java programming.

We'll cover the following...

Concatenation

Java provides special support for the concatenation of multiple Strings. Concatenation is referred to as the joining of two or more Strings. This is done by the use of the + operator. The code below shows an example of both.

Did you know? The interesting thing is that the + operator can be used to not only join a String with other Strings but also join Strings with other types of objects.

Java
class concat {
    public static void main(String[] args) {
        String one = "Hello";
        String two = " World";
        int number = 10;
        // concatenating two strings
        System.out.println(one + two);
        //concatenating a number and string
        System.out.println(one + " " + number);
        //saving concatenated string and printing
        String new_string = one + two + " " + number;
        System.out.println(new_string);
    }
}

Note: Keep in mind that using the + operator will first convert the number or other objects to String type and then do the concatenation! ...

Comparing