How to Get the Last Letter of a String in Java
In Java, strings are immutable, meaning that once a string is created, it cannot be changed. This can sometimes make it challenging to perform operations on strings, such as extracting the last letter. However, with the right approach, you can easily retrieve the last character of a string. In this article, we will explore several methods to achieve this task.
One of the simplest ways to get the last letter of a string in Java is by using the charAt() method. This method returns the character at the specified index in the string. Since Java strings are zero-indexed, the last character of the string is at index length – 1. Here’s an example:
“`java
String str = “Hello”;
char lastChar = str.charAt(str.length() – 1);
System.out.println(lastChar); // Output: o
“`
Another approach is to use the substring() method, which returns a new string that is a substring of the original string. By passing the indices 0 and 1 to the substring() method, you can extract the last character of the string. Here’s how you can do it:
“`java
String str = “World”;
char lastChar = str.substring(str.length() – 1).charAt(0);
System.out.println(lastChar); // Output: d
“`
If you’re looking for a more concise solution, you can use the following code snippet, which combines the charAt() and substring() methods:
“`java
String str = “Java”;
char lastChar = str.substring(str.length() – 1).charAt(0);
System.out.println(lastChar); // Output: a
“`
In addition to these methods, you can also use a loop to iterate through the string and return the last character. Here’s an example:
“`java
String str = “Programming”;
char lastChar = ‘ ‘;
for (int i = 0; i < str.length(); i++) {
lastChar = str.charAt(i);
}
System.out.println(lastChar); // Output: g
```
In conclusion, there are several methods to get the last letter of a string in Java. You can use the charAt() method, the substring() method, or a loop to achieve this task. Choose the method that best suits your needs and preferences.
