The Apache Commons method StringUtils.isNotBlank will return false if the string is null, empty, or contains only whitespace. There will be differences in the following situations:
| str1 | str2 | Results(1st code/2nd code) |
|---|---|---|
| null | null | false/true |
| "" | "" | false/true |
| " " | " " | false/true |
Spring
docs.spring.io › spring-framework › docs › current › javadoc-api › org › springframework › util › StringUtils.html
StringUtils (Spring Framework 7.0.6 API)
The Object signature is useful for general attribute handling code that commonly deals with Strings but generally has to iterate over Objects since attributes may, for example, be primitive value objects as well. Note: If the object is typed to String upfront, prefer hasLength(String) or hasText(String) instead. ... Check that the given CharSequence is neither null nor of length 0. Note: this method returns true for a CharSequence that purely consists of whitespace. StringUtils.hasLength(null) = false StringUtils.hasLength("") = false StringUtils.hasLength(" ") = true StringUtils.hasLength("Hello") = true
GitHub
github.com › openrewrite › rewrite-spring › issues › 475
`StringUtils#isEmpty` is not equivalent to `ObjectUtils#isEmpty` for collections · Issue #475 · openrewrite/rewrite-spring
January 12, 2024 - But the stricter check in ObjectUtils now checks if its any collection and the collection is empty or not. Its an idiosyncracy from our codebase, but the expectation from rewrite plugin was the code changes would be one-to-one, just a null check ...
Author timtebeek
Top answer 1 of 7
3
Both the methods in the Java String class and the methods in StringUtils are highly optimised for the specific tasks they were designed to solve. Different methods are designed to solve slightly different tasks. Try to pick the method that most closely matches the task you are trying to solve, and it's likely you will get very good performance.
If there are two possible approaches that look equally good, and it's vital to get every last bit of performance, then measure it! Time the performance of both approaches on your actual data.
But also remember that it's often cheaper to buy a faster computer instead of spending hours of development time micro-optimizing your code to get it to run fast on a slow machine.
2 of 7
1
Well it probably depends on each individual method. Most of the methods represent very basic code that people often have to write by hand such as
return s1 == s2 || (s1 == null && s2 == null) || (s1 != null && s1.equals( s2 ) );
This code would very likely be optimised to the same thing by the hotspot compiler removing even the method call. I would guess that the only savings in time you'll find are in writing.
As suggested elsewhere, I would just recommend benchmarking the methods you are interesting in yourself use System.currentTimeMillis() around a loop that calls the method on some random strings; random because you don't want it optimised away.
GitHub
github.com › spring-projects › spring-framework › issues › 25945
Deprecate `StringUtils.isEmpty(Object)` and replace remaining usage (e.g. with `ObjectUtils.isEmpty`) · Issue #25945 · spring-projects/spring-framework
October 21, 2020 - With static imports code like this looks perfectly fine: List data = ... if (isEmpty(data)) { But if the import has StringUtils.isEmpty the condition above will not work correctly for empty List introducing a hidden, difficult to...
Author sabi0
Medium
medium.com › @vallalashraven › understanding-stringutils-hastext-stringutils-and-objectutils-in-spring-a-practical-guide-1a24b70d70f4
Understanding StringUtils.hasText(), StringUtils, and ObjectUtils in Spring: A Practical Guide | by Vallala Sravan kumar | Medium
November 24, 2025 - ObjectUtils.isEmpty(null); // true ObjectUtils.isEmpty(""); // true ObjectUtils.isEmpty(new int[]{}); // true ObjectUtils.isEmpty(List.of()); // true ObjectUtils.isEmpty(" "); // false · Note that " " (a whitespace string) is not considered empty. For validating fields where whitespace-only values are invalid. if (!StringUtils.hasText(username)) { throw new IllegalArgumentException("Username cannot be empty"); }
Medium
medium.com › @vino7tech › useful-stringutils-methods-in-java-833dc5236f0a
Useful StringUtils Methods in Java | by Vinotech | Medium
September 29, 2024 - StringUtils is a utility class commonly used in Java to perform operations on String objects. It contains a collection of static methods…
Apache Commons
commons.apache.org › proper › commons-lang › apidocs › org › apache › commons › lang3 › ObjectUtils.html
ObjectUtils (Apache Commons Lang 3.21.0-SNAPSHOT API)
Use this method for validation, for example: public Foo(Bar bar) { this.bar = Objects.requireNonEmpty(bar, "bar"); } ... T - the type of the reference. ... NullPointerException - if obj is null. IllegalArgumentException - if obj is empty per isEmpty(Object). ... Gets the toString() of an Object ...
Pega
support.pega.com › question › what-does-stringutils-equals-method-do-and-how-does-it-work
What does the stringUtils Equals method do and how does it work? | Support Center
May 31, 2018 - So stringUtils.Equals(obj) solely checks if that one input exists or not?
Spring
docs.spring.io › spring-framework › docs › current › javadoc-api › org › springframework › util › ObjectUtils.html
ObjectUtils (Spring Framework 7.0.6 API)
public abstract class ObjectUtils extends Object · Miscellaneous object utility methods. Mainly for internal use within the framework. Thanks to Alex Ruiz for contributing several enhancements to this class! Since: 19.03.2004 · Author: Juergen Hoeller, Keith Donald, Rod Johnson, Rob Harrop, Chris Beams, Sam Brannen · See Also: ClassUtils · CollectionUtils · StringUtils ·
Medium
khmarbaise.medium.com › java-does-not-offer-stringutils-objectutils-or-collectionutils-a-supplemental-library-4f458b1be477
Java does NOT offer StringUtils, ObjectUtils or CollectionUtils (a supplemental library…
April 8, 2024 - Java offers smarter, more readable alternatives that scale with your project. By using utility classes like StringUtils, ObjectUtils, and CollectionUtils, or embracing Optional, you'll write cleaner code, dodge null pointer exceptions, and make your futur…
Apache Commons
commons.apache.org › proper › commons-lang › javadocs › api-3.9 › org › apache › commons › lang3 › ObjectUtils.html
ObjectUtils (Apache Commons Lang 3.9 API)
ObjectUtils.isNotEmpty(null) = false ObjectUtils.isNotEmpty("") = false ObjectUtils.isNotEmpty("ab") = true ObjectUtils.isNotEmpty(new int[]{}) = false ObjectUtils.isNotEmpty(new int[]{1,2,3}) = true ObjectUtils.isNotEmpty(1234) = true
LinkedIn
linkedin.com › pulse › useful-utility-methods-order-have-easy-to-read-code-helmut-siegel
Useful utility methods in order to have easy-to-read and easy-to-understand code
November 12, 2025 - The org.apache.commons.lang3.ObjectUtils classcontains utility methods for operating on objects.
Apache Commons
commons.apache.org › proper › commons-lang › apidocs › org › apache › commons › lang3 › StringUtils.html
StringUtils (Apache Commons Lang 3.21.0-SNAPSHOT API)
Instead, the class should be used as StringUtils.trim(" foo ");.
Medium
tamerardal.medium.com › simplify-null-checks-in-java-writing-clean-code-with-apache-commons-lang-3-e7d3aea207bd
Simplify Null Checks in Java: Writing Clean Code with Apache Commons Lang 3 | by Tamer Ardal | Medium
September 18, 2024 - Integer age = ObjectUtils.defaultIfNull(inputAge, 18); Especially when working with String values, we need to do a lot of null or empty checking. In this case, we can easily do this with the StringUtils class.
GitHub
github.com › apache › commons-lang › blob › master › src › main › java › org › apache › commons › lang3 › ObjectUtils.java
commons-lang/src/main/java/org/apache/commons/lang3/ObjectUtils.java at master · apache/commons-lang
* ObjectUtils.toString(Boolean.TRUE) = "true" * </pre> * * @param obj the Object to {@code toString()}, may be {@code null}. * @return the input's {@code toString()}, or {@code ""} if the input is {@code null}. * @see Objects#toString(Object) * @see Objects#toString(Object, String) * @see StringUtils#defaultString(String) * @see String#valueOf(Object) * @since 2.0 ·
Author apache
GeeksforGeeks
geeksforgeeks.org › java › string-handling-with-apache-commons-stringutils-class-in-java
String Handling with Apache Commons' StringUtils Class in Java - GeeksforGeeks
April 28, 2025 - import org.apache.commons.lang3.StringUtils; public class StringUtilsExample { public static void main(String[] args) { String str = " hello world "; // isEmpty() example boolean empty = StringUtils.isEmpty(str); System.out.println("Is the string empty? " + empty); // isBlank() example boolean blank = StringUtils.isBlank(str); System.out.println("Is the string blank?
Stackademic
blog.stackademic.com › 5-essential-java-utility-functions-from-apache-commons-lang-beyond-stringutils-arrayutils-bf22fe046a02
5 Essential Java Utility Functions from Apache Commons Lang (Beyond StringUtils & ArrayUtils) | by Malvin Lok | Stackademic
April 28, 2025 - While StringUtils and ArrayUtils are widely known and heavily used, Apache Commons Lang has much more to offer.
Baeldung
baeldung.com › home › java › java string › checking for empty or blank strings in java
Checking for Empty or Blank Strings in Java | Baeldung
January 8, 2024 - Furthermore, the Spring Core library provided a class named StringUtils which has a method to check if a string is empty. However, the class was deprecated in the Spring 5.3.0 version and above. It’s replaced with the ObjectUtils class.
OpenRewrite
docs.openrewrite.org › recipe catalog › java › spring › spring framework › use `objectutils#isempty(object)`
Use ObjectUtils#isEmpty(Object) | OpenRewrite Docs
recipeList: - org.openrewrite.java.ChangeMethodTargetToStatic: methodPattern: org.springframework.util.StringUtils isEmpty(Object) fullyQualifiedTargetTypeName: org.springframework.util.ObjectUtils
Published April 8, 2025