randomAscii()
is a RandomStringUtils
class that is used to generate random string consisting of ASCII characters.
Characters will be chosen from the set of characters whose ASCII value is between 32 and 126 (inclusive).
There are two variations of this method:
This variation of the method creates a random string whose length is the number of characters specified.
public static String randomAscii(final int count)
final int count
: the length of random string to generate.
The method returns a random string.
This variation of the method creates a random string whose length is between the inclusive minimum and the exclusive maximum.
public static String randomAscii(final int minLengthInclusive, final int maxLengthExclusive)
final int minLengthInclusive
: The inclusive minimum length of the string to generate.
final int maxLengthExclusive
: The exclusive maximum length of the string to generate.
The method returns a random string.
RandomStringUtils
The definition of RandomStringUtils
can be found in the Apache Commons Lang
package, which we can add to the Maven project by adding the following dependency to the pom.xml
file:
<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.
You can import the RandomStringUtils
class as follows.
import org.apache.commons.lang3.RandomStringUtils;
count = 5
In the first example, we use the first variation of the method where we specify the exact length of the generated string. The method generates the random string 3]q7Y
of length five.
minimum length = 5
maximum length = 10
In the second example, we use the second variation of the method where we specify the minimum and maximum length of the generated string. The method generates the random string -c<Qe?
of length six.
import org.apache.commons.lang3.RandomStringUtils;public class Main{public static void main(String[] args){// Example 1int count = 5;System.out.println("The output of RandomStringUtils.randomAscii when the length is " + count + " - " + RandomStringUtils.randomAscii(count));// Example 2int minLength = 5;int maxLength = 10;System.out.println("The output of RandomStringUtils.randomAscii when the (minlength, maxlength) is (" + minLength + ", " + maxLength + ") - " + RandomStringUtils.randomAscii(minLength, maxLength));}}
The output of the code will be as follows:
The output of RandomStringUtils.randomAscii when the length is 5 - 3]q7Y
The output of RandomStringUtils.randomAscii when the (minlength, maxlength) is (5, 10) - -c<Qe?
The output might differ each time the code above is run.