Wie vergleiche ich Objekte von 2 verschiedenen Arrays?

Wenn Ihnen die Reihenfolge wichtig ist, können Sie die "gleich"-Methode der Liste verwenden.

List mcategoryIdList = new ArrayList();
List scategoryIdList = new ArrayList();
for (int i = 0; i < jsonArray.length(); i++) {
    //retrieve json objects
    JSONObject Jasonobject = jsonArray.getJSONObject(i);
    JSONObject jsonObject1 = jsonArray1.getJSONObject(i);

    //add to lists
    mcategoryIdList.add(Jasonobject.getString("category_id"));
    scategoryIdList.add(jsonObject1.getString("category_id"))
}

//now you can compare both
if(mcategoryIdList.equals(scategoryIdList)){
    //they're equal
}else{
    //they're not equal
}

Wenn Ihnen die Reihenfolge egal ist, verwenden Sie Sets:

Set mcategoryIdSet = new HashSet();
Set scategoryIdSet = new HashSet();
for (int i = 0; i < jsonArray.length(); i++) {
    //retrieve json objects
    JSONObject Jasonobject = jsonArray.getJSONObject(i);
    JSONObject jsonObject1 = jsonArray1.getJSONObject(i);

    //add to sets
    mcategoryIdSet.add(Jasonobject.getString("category_id"));
    scategoryIdSet.add(jsonObject1.getString("category_id"))
}

//now you can compare both
if(mcategoryIdSet.equals(scategoryIdSet)){
    //they're equal
}else{
    //they're not equal
}