java - Homework: Class to record Student Grades -

homework question

write grading program class following grading policies: a) 3 quizzes graded out of 10 points, weighted 25% b) 1 midterm graded out of 100 points, weighted 35% c) 1 final graded out of 100 points, weighted 40% class requires set of accessor , mutator methods, full constructor, default constructor, equals method, , string method. class should have instance variables quizzes, midterm, , final only. then, write tester program should read student's scores , output student's scores , student's record. student's overall numeric score entire course , final letter grade.

i keep getting errors no matter do! errors "error: cannot find symbol" glad if me figure out wrong. have spent hours on this.

these methods...

import java.util.scanner;  public class studentrecord {     /***declarations**/      private int quizscore1;     private int quizscore2;     private int quizscore3;                 private int midtermscore;     private int finalscore;      /***accessor methods**/      public int getquizscore()     {         return quizscore1;         return quizscore2;         return quizscore3;     }      public int getmidtermscore()     {         return midtermscore;     }      public int getfinalscore()     {         return finalscore;     }      /***mutator methods**/      public void setquizscore(int quizscore1, int quizscore2, int quizscore3)     {         if (quizscore1 < 0 || quizscore1 > 10)         {             system.out.println("error: invalid quiz grade");          }         if (quizscore2 < 0 || quizscore2 > 10)         {             system.out.println("error: invalid quiz grade");         }         if (quizscore3 <0 || quizscore3 > 10)         {             system.out.println("error: invalid quiz grade");         }         else         {             this.quizscore1 = quizscore1;             this.quizscore2 = quizscore2;             this.quizscore3 = quizscore3;         }     }      public void setmidtermscore(int midtermscore)     {         if (midtermscore < 0 || midtermscore > 100)         {             system.out.println("error: invalid midterm score");         }         else         {             this.midtermscore = midtermscore;         }     }      public void setfinalscore(int finalscore)     {         if (finalscore < 0 || finalscore > 100)         {             system.out.println("error: invalid final score");         }         else         {             this.finalscore = finalscore;         }     }      /***other methods***/      public void studentrecord()     {         quizscore1 = 0;         quizscore2 = 0;         quizscore3 = 0;         midtermscore = 0;         finalscore = 0;     }      public void studentrecord(int quizscore1, int quizscore2, int quizscore3, int midtermscore, int finalscore)     {         system.out.println("quiz score 1: " + quizscore1);         system.out.println("quiz score 2: " + quizscore2);         system.out.println("quiz score 3: " + quizscore3);         system.out.println("midterm score: " + midtermscore);         system.out.println("final score: " + finalscore);     }      public boolean equals (studentrecord otherstudentrecord)     {         return (quizscore1 == otherstudentrecord.quizscore1);         return (quizscore2 == otherstudentrecord.quizscore2);         return (quizscore3 == otherstudentrecord.quizscore3) ;         return (midtermscore == otherstudentrecord.midtermscore);         return (finalscore == otherstudentrecord.finalscore);     }      public int getgradescore()     {         int gradescore;          gradescore = (((quizscore1 + quizscore2 + quizscore3) / 3) / 10 * 25) + (midtermscore / 100 * 35) + (finalscore / 100 * 40);      }      public char getlettergrade()     {         int gradescore;         char lettergrade;          if (gradescore >= 90 && gradescore <= 100)         {             return 'a';         }         else if (gradescore >= 80 && gradescore <= 89)         {             return 'b';         }         else if (gradescore >= 70 && gradescore <= 79)         {             return 'c';         }         else if (gradescore >= 60 && gradescore <= 69)         {             return 'd';         }         else          {             return 'f';         }     }      public string tostring()     {         return ("grade score " + gradescore + "and letter grade " + lettergrade);     }  } 

...and tester program...

import java.util.scanner;  public class calculatingstudentgrade {     public static void main(string[] args)     {         scanner keyboard;         int quizscore1, quizscore2, quizscore3, midtermscore, finalscore;          keyboard = new scanner(system.in);          system.out.println("enter quiz 1 score:");         quizscore1 = keyboard.nextint();         system.out.println("enter quiz 2 score:");         quizscore2 = keyboard.nextint();         system.out.println("enter quiz 3 score:");         quizscore3 = keyboard.nextint();          studentrecord.getquizscore();         studentrecord.getmidtermscore();         studentrecord.getfinalscore();          studentrecord.setquizscore();         studentrecord.setmidtermscore();         studentrecord.setfinalscore();          studentrecord.studentrecord();         studentrecord.getgradescore();         studentrecord.getlettergrade();      } } 

you can not return multiple statement here.i think sum of quiz. make sum , return.

  public int getquizscore()     {         return quizscore1;         return quizscore2;         return quizscore3;     } 

instead of

public int getquizscore() {      return quizscore1+quizscore2+quizscore3; }