[Python] Switch case implementation in Java for an integer pair combination

I have following python code -

def get_subject_from_stream_id_and_subject_id(stream_id, subject_id):
#(stream_id, subject_id): ("subject_name")
return {
(1, 1): "Accounts",
(1, 2): "English",
(1, 3): "Organization of Commerce",
(2, 1): "Physics",
(2, 2): "English",
(2, 3): "Biology"
}.get((stream_id, subject_id), "None")


In this code, I want to get subject name from the integer pair combination i.e. stream_id, subject_id e.g. (1, 2) is for English. It was implemented using python tuple.

I want to implement the same piece of code in Java.

Could someone write this in a better way in Java?

public String getSubjectFromStreamIdAndSubjectId(int streamId, int subjectId) {
switch (streamId) {
case 1:
switch (subjectId) {
case 1:
return "Accounts";
case 2:
return "English";
case 3:
return "Organization of Commerce";
default:
return null;
}

case 2:
switch (subjectId) {
case 1:
return "Physics";
case 2:
return "English";
case 3:
return "Biology";
default:
return null;
}
default:
return null;
}
}


Thank you.

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