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Postsdbo
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    <p>I think a better design would be this:</p> <pre><code>public class CollegeCourse { private final String courseId; private final int creditHours; public CollegeCourse(final String courseId, int creditHours) { this.courseId = courseId; this.creditHours = creditHours; } public String getCourseId() { return courseId; } public int getCreditHours() { return creditHours; } @Override public boolean equals(Object o) { if (o == this) { return true; } if (!(o instanceof CollegeCourse)) { return false; } CollegeCourse cc = (CollegeCourse)o; return courseId.equals(cc.courseId) &amp;&amp; creditHours == cc.creditHours; } @Override public int hashCode() { int result = 17; result = 31 * result + courseId.hashCode(); result = 31 * result + creditHours; return result; } }; public enum Grade { A, B, C, D, E }; public class Student { private final String id; private final Map&lt;CollegeCourse, Grade&gt; course2GradeMap = new HashMap&lt;&gt;(); public Student(final String id) { this.id = id; } public Grade getGrade(final CollegeCourse course) { return couse2GradeMap.get(course); } public void addCollegeCourse(final CollegeCourse course, Grade grade) { course2GradeMap.put(course, grade); } public Collection&lt;CollegeCourse&gt; getCollegeCourses() { return Collections.unmodifiableCollection(course2GradeMap.values()); } }; </code></pre> <p>Use it in this way:</p> <pre><code>Student student = new Student("001"); student.addCollegeCourse(new CollegeCourse('alg', 100), Grade.A); student.addCollegeCourse(new CollegeCourse('stat', 100), Grade.C); </code></pre>
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    1. POI am looking to set and an array in java while setting a sub method in the array
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    1. USuser278064
    1. USuser278064
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