# 
## What is the `replaceAll` method?

The **`replaceAll`** method is a 
#key# static:  Any static member can be accessed before any objects of its class are created and without reference to any object. #key# method of the `RegExUtils` class that is used to replace all the substrings in a given string that match the specified regular expression with the replacement value.

# 
## Add the Apache Common Lang package

`RegExUtils` is defined in the Apache Commons Lang package. To add the Apache Commons Lang to the Maven project, add the following dependency to `pom.xml` file.

---
``` xml
<dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
</dependency>
```
---
> For other versions of the commons-lang package, refer to the [Maven Repository](https://mvnrepository.com/artifact/org.apache.commons/commons-lang3).

# 
## How to import `RegExUtils`

`RegExUtils` class can be imported as follows.

```
import org.apache.commons.lang3.RegExUtils;
```

# 
#  Syntax

```
public static String replaceAll(final String text, final Pattern regex, final String replacement)
```

# 
## Parameters

* `final String text`: The string on which the regex is applied.

* `final Pattern regex`: regular expression.

* `final String replacement`: replacement string.

##
## Return value

This function returns the modified text after replacing the substrings that match the regex with the replacement string.

# 
## Code

In the code below, we define a text that has `educative` word repeated multiple times in the text. Next, we use the `replaceAll` method to replace the word `educative` from the text with the word `edpresso`.

import org.apache.commons.lang3.RegExUtils;

import java.util.regex.Pattern;

public class Main {

    public static void main(String[] args)
    {
        String text = "educative is the best platform for java. educative is the best platform for python. educative is the best platform for c.";
        System.out.println(RegExUtils.replaceAll(text, Pattern.compile("educative"), "edpresso"));
    }
}

# 
## Output

The output of the code when executed would be as follows.

```
edpresso is the best platform for java. edpresso is the best platform for python. edpresso is the best platform for c.
```

What is RegExUtils.replaceAll in Java?

RegExUtils.replaceAll replaces substrings matching a regex in a string with a given replacement.

What is RegExUtils.replaceAll in Java?

What is the replaceAll method?

Add the Apache Common Lang package

How to import RegExUtils

Syntax

Parameters

Return value

Code

Output

What is the `replaceAll` method?

How to import `RegExUtils`