Erreur "Exception in thread "main" java.lang.Error: Unresolved compilation problem: "
bonjour
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import java.io.*;
public class StuDetail
{
int RollNo;
}
class StudMarks extends StuDetail
{
float sub1;
float sub2;
float sub3;
float TotalMarks;
void getData()
{
System.out.println("\nRecording Entry");
try
{
BufferedReader obj=new BufferedReader(new InputStreamReader(System.in));
String sRNo,sSub1,sSub2,sSub3;
System.out.println("Enter Roll No:");
System.out.flush();
sRNo=obj.readLine();
RollNo=Integer.parseInt(sRNo);
System.out.println("Enter Marks for Subject 1:");
System.out.flush();
sSub1=obj.readLine();
sub1=Float.parseFloat(sSub1);
System.out.println("Enter Marks for Subject 2:");
System.out.flush();
sSub2=obj.readLine();
sub2=Float.parseFloat(sSub2);
System.out.println("Enter Marks for Subject 3:");
System.out.flush();
sSub3=obj.readLine();
sub3=Float.parseFloat(sSub3);
TotalMarks=sub1+sub2+sub3;
}
catch(Exception e)
{}
}
void display()
{
System.out.println("\nDisplaying Record");
System.out.println("Roll No:"+RollNo);
System.out.println("Subject 1:"+sub1);
System.out.println("Subject 1:"+sub2);
System.out.println("Subject 1:"+sub3);
System.out.println("Total Marks:"+TotalMarks);
}
void TotalMarks()
{
System.out.println("\nDisplaying Record");
System.out.println("Roll No:"+RollNo);
System.out.println("Total Marks:"+TotalMarks);
}
} |
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import java.io.BufferedReader;
import java.io.InputStreamReader;
public class StudentDatabase
{
public static void main(String []args)
{
System.out.println("\n======STUDENT DATABASE=====\n");
float HighMark_sub1;
float HighMark_sub2;
float HighMark_sub3;
float StudHightMark;
int No_of_stud=3,choice;
String str;
char c;
try
{
BufferedReader obj=new BufferedReader(new InputStreamReader(System.in));
System.out.print("\nEnter number of students:");
System.out.flush();
str=obj.readLine();
No_of_stud=Integer.parseInt(str);
StudMarks SMobj[]=new StudMarks[No_of_stud];
//SMobj[i] = new SMobj[i];
while(true)
{
System.out.println("\nChoose your choice....");
System.out.println("1)PASS ENTRY");
System.out.println("2)DISPLAY ALL RECORDS");
System.out.println("3)DISPLAT TOTAL MARKS for all students");
System.out.println("4)DISPLAT HIGHEST MARKS in each subject");
System.out.println("5 DISPLAY student who recived highest total marks");
System.out.println("6 Exit");
System.out.println("ENTER YOUR CHOICE:");
System.out.flush();
str=obj.readLine();
choice=Integer.parseInt(str);
switch(choice)
{
case 1:
for(int i=0; i<No_of_stud; i++)
{
SMobj[i] = new SMobj(i);
SMobj[i].getData();
break;
}
case 2:
for(int i=0; i<No_of_stud; i++)
SMobj[i].display();
break;
case 3:
for(int i=0; i<No_of_stud; i++)
SMobj[i].TotalMarks();
break;
case 4:break;
case 5:break;
case 6:System.out.println("\nThanks for visting.....");
System.exit(1);
}
}
}
catch(Exception e)
{ e.printStackTrace();}
}
} |
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
SMobj cannot be resolved to a type
at StudentDatabase.main(StudentDatabase.java:45)
ligne 45 est:
SMobj[i] = new SMobj(i);
