The StringUtils class from the org.apache.commons.lang package in Java provides a collection of utility methods for working with Strings.
One of the most commonly used methods from this class is defaultString(). This method takes a String as an argument and returns it unchanged if it is not null, or returns an empty String ("") if it is null. This can be useful for handling null values safely when working with Strings.
Example 1:
String str = "Hello World"; String result = StringUtils.defaultString(str); System.out.println(result);
Output: "Hello World"
In this example, the defaultString() method is used to return the original String value since it is not null.
Example 2:
String str = null; String result = StringUtils.defaultString(str); System.out.println(result);
Output: ""
In this example, the defaultString() method is used to return an empty String since the input String is null.
Overall, the StringUtils class from the Apache Commons Lang library provides a convenient and efficient way to work with Strings in Java.
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