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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7.  
  8.  class GradeBookTest 
  9.  { 
  10. 	public static void main( String[] args ) 
  11. 	{ 
  12.  
  13. 		int[] gradesArray = { 87, 68, 94, 100, 83, 78, 85, 91, 76, 87 }; 
  14.  
  15. 		GradeBook myGradeBook = new GradeBook("CS101 Introduction to Java Programming", gradesArray ); 
  16. 		myGradeBook.displayMessage(); 
  17. 		myGradeBook.processGrades(); 
  18. 	} 
  19.  } 
  20.  
  21.  
  22.  class GradeBook 
  23.  { 
  24. 	private String courseName; 
  25. 	private int[] grades; 
  26.  
  27. 	public GradeBook( String name, int[] gradesArray ) 
  28. 	{ 
  29. 		courseName = name;
  30. 		grades = gradesArray; 
  31. 	} 
  32. 	public void setCourseName( String name ) 
  33. 	{ 
  34. 		courseName = name;
  35. 	} 
  36. 	public String getCourseName() 
  37. 	{ 
  38. 		return courseName;
  39. 	} 
  40. 	public void displayMessage() 
  41. 	{ 
  42. 		System.out.printf( "Welcome to the grade book for%s!",getCourseName() ); 
  43. 	} 
  44. 	public void processGrades() 
  45. 	{ 
  46. 		outputGrades(); 
  47. 		System.out.printf( "Class average is %.2f", getAverage() ); 
  48. 		//outputBarChart(); 
  49. 	} 
  50. 	public double getAverage() 
  51. 	{ 
  52. 		int total = 0; // initialize total
  53. 		for ( int grade : grades ) 
  54. 			total += grade; 
  55. 		return ( double ) total / grades.length; 
  56. 	} 
  57.  
  58. 	//public void outputBarChart() 
  59.  
  60. 	public void outputGrades() 
  61. 	{ 
  62. 		System.out.println( "The grades are:" ); 
  63. 		for ( int student = 0; student < grades.length; student++ ) 
  64. 			System.out.printf( "Student %2d: %3d", student + 1, grades[ student ] ); 
  65. 	} 
  66.  }
Success #stdin #stdout 0.06s 2184192KB
comments (?)
stdin 
Standard input is empty
stdout 
Welcome to the grade book forCS101 Introduction to Java Programming!The grades are:
Student  1:  87Student  2:  68Student  3:  94Student  4: 100Student  5:  83Student  6:  78Student  7:  85Student  8:  91Student  9:  76Student 10:  87Class average is 84.90
https://ideone.com/xrqNHg
language:
Java (12.0.1)
created:
6 years ago
visibility:
public

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