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Learn to Code: Java for Absolute Beginners

Inside the String

Explore the essentials of working with strings in Java. Learn to initialize strings, access individual characters by index, use loops for string processing, perform concatenation, and practice common string manipulations including reversing strings and palindrome tests. Gain foundational skills to handle text data effectively in your Java programs.

We'll cover the following...

Collection

A collection is a general term used to group multiple values into a single unit. We use collections all the time in the real world―a book is a collection of pages, a train is a collection of train cars, and a wardrobe is a collection of clothes.

String

A string is a collection of characters, mostly treated as a single unit. A string is used to store text values like a name, address, message, etc.

Initializing the string

The following program demonstrates the initialization of a string:

Java
class Test
{
  public static void main(String[] args) 
  { 
    String string1 = "It is a string";
    System.out.println(string1);
  }
}

In line 5, we declare string using double quotes "".

Accessing the characters in a string

Java allows us to access individual characters inside a ...