How to Use the Substring Method in Java and Replace Text

In this example, we will learn how to use the substring method in Java with parameters 6 and 11. The substring() method takes two integer values as input: the starting index (inclusive) and the ending index (exclusive). It returns a brand-new string that contains all of the characters from the starting index to the ending index of the original string.

Let's consider an example where we want to extract the substring 'World' from the text 'Hello, World!'. We can accomplish this by using the substring() method. To understand how the substring() method works, let's look at a detailed explanation below.

How Does the Substring Method Operate?

The substring method operates in such a way that it takes two integer values as input: the starting index (inclusive) and the ending index (exclusive). The original string remains unchanged since strings in Java are immutable. Instead, the method returns a new string. Using the larger string as a starting point, a smaller string can be created.

Substring in JAVA - A Frequently Used Function

The substring() function is one of the most widely used functions in Java programming language. It's often used to extract a portion or subset from a larger string. For instance, 'Substring' is a substring of 'Substring in Java'. By way of illustration, it can also be a subset or portion of another string.

Example Program for Substring in Java (Exception)

Here is an example program that demonstrates the use of the substring method in Java:

```java

public class Main {

public static void main(String'' args) {

String str = 'Hello, World!';

String substr = str.substring(6, 11); // extracts the substring from index 6 to 11

System.out.println('Substring: ' + substr);

}

```

In this example, we pass the string 'Hello, World!' and parameters 6 and 11 to the substring() method. The output will be 'World', which is the extracted substring.

The substring method in Java provides a way to extract a portion or subset from a larger string. It's an essential function that is widely used in various applications. By understanding how the substring method works, you can effectively use it to manipulate strings in your Java programming projects.

Substring java replace