ADDITIONAL SYSTEM INFORMATION :
openjdk version "1.8.0_432"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_432-b06)
OpenJDK 64-Bit Server VM (Temurin)(build 25.432-b06, mixed mode)

openjdk version "11.0.25" 2024-10-15
OpenJDK Runtime Environment Temurin-11.0.25+9 (build 11.0.25+9)
OpenJDK 64-Bit Server VM Temurin-11.0.25+9 (build 11.0.25+9, mixed mode)

A DESCRIPTION OF THE PROBLEM :
Attempting to create a com.sun.org.apache.bcel.internal.classfile.JavaClass object with a ConstantPool(new Constant[3]) in the parameters causes the report Constant pool at index 0 is null
Although the final report content is the same, the Exception thrown by Hotspot8 and 11 are different.
Where Hotspot-8 reports:
com.sun.org.apache.bcel.internal.classfile.ClassFormatException: constant pool at index 0 is null.
        at com.sun.org.apache.bcel.internal.classfile.ConstantPool.getConstant(ConstantPool.java:241)
        at com.sun.org.apache.bcel.internal.classfile.ConstantPool.getConstantString(ConstantPool.java:274)
        at com.sun.org.apache.bcel.internal.classfile.JavaClass.<init>(JavaClass.java:145)
        at test.main(test.java:6)
Hotspot-11 Report:
Exception in thread “main” java.lang.NullPointerException
        at java.xml/com.sun.org.apache.bcel.internal.classfile.ConstantPool.getConstantString(ConstantPool.java:369)
        at java.xml/com.sun.org.apache.bcel.internal.classfile.JavaClass.<init>(JavaClass.java:214)
        at test.main(test.java:6)

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
java.lang.NullPointerException
ACTUAL -
com.sun.org.apache.bcel.internal.classfile.ClassFormatException

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import com.sun.org.apache.bcel.internal.classfile.*;
public class test {
    public static void main(String[] var0) {
        new JavaClass(0, 100, "", 3, 3, 3, new ConstantPool(new Constant[3]), new int[3], new Field[3], new Method[1], new Attribute[3], (byte)1);
    }
}
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