CodeQL documentation

Confusing method names because of capitalization

ID: java/confusing-method-name
Kind: problem
Security severity: 
Severity: recommendation
Precision: high
   - maintainability
   - readability
   - naming
Query suites:
   - java-security-and-quality.qls

Click to see the query in the CodeQL repository

It is bad practice to have methods in a class with names that differ only in their capitalization. This can be confusing and lead to mistakes.


Name the methods to make the distinction between them clear.


The following example shows a class that contains two methods: toUri and toURI. One or both of them should be renamed.

public class InternetResource
	private String protocol;
	private String host;
	private String path;

	// ...

	public String toUri() {
		return protocol + "://" + host + "/" + path;

	// ...

	public String toURI() {
		return toUri();


  • R. C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship, 17.N4. Prentice Hall, 2008.

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