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Java code:
public class GPAsheet{
Map<String,Integer> sheet = new HashMap<String, Integer>();
String StudentName;
GPAsheet (String a){
StudentName = a;
}
public void CourseAdd(String a, Integer b){
sheet.put(a, b);
}
public int GetMark(String a){
return
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id name datetime
1 a 2010-05-13 10:15:00
2 b 2010-05-14 09:10:00
3 d 2010-05-14 10:10:00
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