student.java

这是JAVA入门程序

import javax.swing.JOptionPane;

abstract class Student{
	protected int midterm = 0;
	protected int finalExam = 0;
	protected int research = 0;
	protected int presentation = 0;
	protected double finalNumericGrade = 0;
	protected String finalLetterGrade = "";
	
	public void Student()
	{
		System.out.println("Student constructor!");	
	}
	
	protected void setMidterm(int temp)
	{
			if(temp<0 | temp>100)
		{
			JOptionPane.showMessageDialog(null,"Invalid Midterm Grade("+temp+")"+"Program Terminating");
			System.exit(0);
		}
		else
			midterm = temp;
	}
	
	protected int getMidterm()
	{
		return midterm;	
	}
	
	protected void setFinalExam(int temp)
	{
		if(temp < 0 | temp > 100)
			{
					JOptionPane.showMessageDialog(null,"Invalid finalExam Grade("+temp+")"+"Program Terminating");
			System.exit(0);
		  }
		  else
			finalExam = temp;	
	}
	
	protected int getFinalExam()
	{
		return finalExam;
	}
	
	protected void setResearch(int temp)
	{
		if(temp < 0 | temp > 100)
			{
					JOptionPane.showMessageDialog(null,"Invalid finalExam Grade("+temp+")"+"Program Terminating");
			System.exit(0);
		  }
		  else
			research = temp;	
	}
	
	protected int getResearch()
	{
		return research;	
	}
	
	protected void setPresentation(int temp)
	{
		if(temp < 0 | temp > 100)
			{
					JOptionPane.showMessageDialog(null,"Invalid finalExam Grade("+temp+")"+"Program Terminating");
			System.exit(0);
		  }
		  else
			presentation = temp;	
	}
	
	protected int getPresentation()
	{
		return presentation;	
	}
	
	protected double getFinalNumericGrade()
	{
		return finalNumericGrade;	
	}
	
	protected String getFinalLetterGrade()
	{
		return finalLetterGrade;	
	}
	
	abstract void calculate();
	
}