ADDITIONAL SYSTEM INFORMATION :
openjdk version "11.0.28" 2025-07-15
OpenJDK Runtime Environment Temurin-11.0.28+6 (build 11.0.28+6)
OpenJDK 64-Bit Server VM Temurin-11.0.28+6 (build 11.0.28+6, mixed mode)

openjdk version "1.8.0_462"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_462-b08)
OpenJDK 64-Bit Server VM (Temurin)(build 25.462-b08, mixed mode)

A DESCRIPTION OF THE PROBLEM :
When I was performing regression testing using a test case from the GitHub repository (https://github.com/openjdk/jdk/blob/master/test/hotspot/jtreg/vmTestbase/nsk/jdi/IntegerArgument/max/max001.java), I found that the API used in this test case produces different outputs on OpenJDK 8 and OpenJDK 11. This causes the test case to execute normally on 11, but throw an Exception on 8. The source code below is a simplified test program we provided. When executed with OpenJDK 8, its output is 'home', but when executed with OpenJDK 11, the output is 'pid'. I believe this is caused by an issue within OpenJDK 8. Of course, to ensure OpenJDK 8 could run this program, we added tools.jar to assist its execution.


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import com.sun.jdi.Bootstrap;
import com.sun.jdi.connect.Connector;

import java.util.Iterator;
import java.util.Map;

public class test {
    public static void main(String[] var0) {
        Iterator var4 = Bootstrap.virtualMachineManager().allConnectors().iterator();
        Map var8 = ((Connector)var4.next()).defaultArguments();
        Iterator var3 = var8.keySet().iterator();
        String var2 = (String)var3.next();
        System.out.println(var2);
    }
}

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