ADDITIONAL SYSTEM INFORMATION :
openjdk version "21.0.2" 2024-01-16 LTS
OpenJDK Runtime Environment Temurin-21.0.2+13 (build 21.0.2+13-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.2+13 (build 21.0.2+13-LTS, mixed mode, sharing)


A DESCRIPTION OF THE PROBLEM :
When trying to parse a version that ends with 0, i.e.

Runtime.Version.parse("1.0.0");

I get "java.lang.IllegalArgumentException: Invalid version string: '1.0.0'"

This has worked before, although not sure in which version exactly.

REGRESSION : Last worked in version 11

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See "source code"

javac .\Test.java
java Test

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Valid java.lang.Runtime.Version instance
ACTUAL -
Exception in thread "main" java.lang.IllegalArgumentException: Invalid version string: '1.0.0'
        at java.base/java.lang.Runtime$Version.parse(Runtime.java:1122)
        at Test.main(Test.java:3)

---------- BEGIN SOURCE ----------
public class Test {
    public static void main(String[] args) {
        Runtime.Version.parse("1.0.0");
    }
}

---------- END SOURCE ----------

FREQUENCY : always