Question: 1-What is the scope of constructer parameter ? 2-What class the ShowMessageDialog method belong to ? 3-Provide two difference between hashset and arraylist. 4-What is
1-What is the scope of constructer parameter ? 2-What class the ShowMessageDialog method belong to ? 3-Provide two difference between hashset and arraylist. 4-What is coupling in terms of writing classes ?why is low coupling important
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