runtime error when comparing Double object

[fjf2002]

Object o = Double.valueOf(42);
println(o == 42)

... results in run time failure:

SystemException in thread main thread: System exception: TypeError: Cannot convert object to primitive value
at $MainClass86.$main (File new file 0.java: 5)

... whereas the following code runs successfully:

Double o = Double.valueOf(42);
println(o == 42)

[martin-pabst]

Thank you! Compiler now issues compile time error: "Operator == is not defined for operands of type Object and int."