I have 22 errors for cannot find symbol.....Please help!
import javax.swing.*; //needed for swing classes
import java.awt.event.*; // needed for the action listener
import java.awt.*; //needed for the boader layout class
import java.io.*; //need for the file and IOException
import java.util.Scanner; // needed for the scanner class
import java.util.List; // needed for the arraylist
import java.util.Arrays; //needed for the arraylict class
/**
Constructor
*/
public class project3 extends JFrame
{
public gradeTypePanel gradeType; //to reference the the grade Type Panel with the radio buttons
public namePanel name; // to reference the name panel with the name text field
public testPanel test;// to reference the test panel with the 3 test grade fields
public resultPanel result;// to reference the result panel with the result text field
private JPanel panel; // to reference the a panel
private JButton calcButton; // creats the Button named calcButton
private JButton prevButton; // creats the Button named prevButton
private JButton nextButton; // creats the Button named nextButton
private JButton saveButton; // creats the Button named saveButton
private JPanel buttonPanel; // to reference the panel where all the buttons go
public openFile open;// to reference the open file class
public int masterIndex = -1; // this controls all the of the indexes of all 4 arrays
// constructs the window
public project3()
{
// sets the title
setTitle("Grade Program");
// set what happens when the exit button is clicked
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// sets the border layout
setLayout(new BorderLayout());
//calls the resultPanel class and names it result
result = new resultPanel();
//calls the gradeTypePanel and names it gradeType
gradeType = new gradeTypePanel();
//calls the namePanel and names it name
name = new namePanel();
//calls the testPanel and names it test
test = new testPanel();
//builds the button panel
buildButtonPanel();
//adds all of the panels to the north, south, east, west, and center panels
add(name, BorderLayout.NORTH);
add(gradeType, BorderLayout.WEST);
add(test, BorderLayout.CENTER);
add(buttonPanel, BorderLayout.EAST);
add(result, BorderLayout.SOUTH);
// packs all the panels togather
pack();
//makes the window visable
setVisible(true);
}
//builds the panel for the buttons
private void buildButtonPanel()
{
buttonPanel = new JPanel();
prevButton = new JButton("Prev");// adds the text prev to the prevButton
calcButton = new JButton("Calc Grade");// adds the text Calc Grade to the calcButton
nextButton = new JButton("Next");// adds the text Next to the nextButton
saveButton = new JButton("Save");// adds the text Save to the saveButton
calcButton.addActionListener(new CalcButtonListener());// calls the ActionListener for the calcButton
prevButton.addActionListener(new PrevButtonListener());// calls the ActionListener for the prevButto
nextButton.addActionListener(new NextButtonListener());// calls the ActionListener for the nextButton
saveButton.addActionListener(new SaveButtonListener());// calls the ActionListener for the addButton
buttonPanel.add(prevButton);// adds the prevButton to the panel
buttonPanel.add(saveButton);// adds the saveButton to the panel
buttonPanel.add(nextButton);// adds the nextButton to the panel
buttonPanel.add(calcButton);// adds the calcButton to the panel
}
//creats actionlistener for the Calc Grade button
private class CalcButtonListener implements ActionListener
{
// executes when the button is clickd
public void actionPerformed(ActionEvent e)
{
//if masterIndex = -1 then you are not at index 0 of the arrays so you cant calculate
if(masterIndex != -1)
{
String nameText;// to save the text in the name text field
nameText = name.txtname.getText();//gets the text form name text field
String grade1;// to save the text in the test1 text field
grade1 = test.test1TextFild.getText();//gets the text form test1 text field
String grade2;// to save the text in the test2 text field
grade2 = test.test2TextFild.getText();//gets the text form test2 text field
String grade3;// to save the text in the test3 text field
grade3 = test.test3TextFild.getText();//gets the text form test3 text field
//if the text in all 3 text field are <= 100 calculate
if(Double.parseDouble(grade1) <= 100 && Double.parseDouble(grade2) <= 100 && Double.parseDouble(grade3) <= 100)
{
//convert and add all 3 grades together
double totalGrade = Double.parseDouble(grade1) + Double.parseDouble(grade2) + Double.parseDouble(grade3);
//get the the avarage
double NumberGrade = (totalGrade / 300) * 100;
//to hold the letter grade
String letterGrade;
//if the alphabetical radio button is Selected get the letter grade
if(gradeType.alphabetical.isSelected())
{
if(NumberGrade >= 90)
{
//sets letter grade to A
letterGrade = "A";
//display the result in the result text field
result.textResult.setText(letterGrade);
}
else if(NumberGrade >= 80)
{
//sets letter grade to B
letterGrade = "B";
//display the result in the result text field
result.textResult.setText(letterGrade);
}
else if(NumberGrade >= 70)
{
//sets letter grade to C
letterGrade = "C";
//display the result in the result text field
result.textResult.setText(letterGrade);
}
else if(NumberGrade >= 60)
{
//sets letter grade to D
letterGrade = "D";
//display the result in the result text field
result.textResult.setText(letterGrade);
}
else if(NumberGrade < 60)
{
//sets letter grade to F
letterGrade = "F";
//display the result in the result text field
result.textResult.setText(letterGrade);
}
}
//if numerical is Selected get the number grade
if(gradeType.numerical.isSelected())
{
//display the result in the result text field
result.textResult.setText(Double.toString(NumberGrade));
}
}
else
{
//displays error message when all grades are not <= 100
JOptionPane.showMessageDialog(null, "All Grades must be less than or equal to (100)");
}
}
else
{
//shows error message when masterIndex == -1
JOptionPane.showMessageDialog(null, "Please click (Next) first");
}
}
}
//creats actionlistener for the Calc prev button
private class PrevButtonListener implements ActionListener
{
// executes when the button is clickd gets the input and calcilates it
public void actionPerformed(ActionEvent e)
{
//if masterIndex is > 0
if(masterIndex > 0)
{
//decrament masterIndex by 1
masterIndex--;
String[] nameList;//to store the array
String[] test1;//to store the array
String[] test2;//to store the array
String[] test3;//to store the array
try
{
nameList = open.getArrayName();//get the nameList array from the class
test1 = open.getArrayTest1();//get the test1 array from the class
test2 = open.getArrayTest2();//get the test2 array from the class
test3 = open.getArrayTest3();//get the test3 array from the class
name.txtname.setText(nameList[masterIndex]);//populate the txtname text field with the array
test.test1TextFild.setText(test1[masterIndex]);//populate the test1 text field with the array
test.test2TextFild.setText(test2[masterIndex]);//populate the test2 text field with the array
test.test3TextFild.setText(test3[masterIndex]);//populate the test3 text field with the array
}
catch (IOException x)
{
//displays an error message
System.out.println("Error");
}
}
else
{
JOptionPane.showMessageDialog(null, "There are no previous students");
}
}
}
//creats actionlistener for the next button
private class NextButtonListener implements ActionListener
{
// executes when the button is clickd
public void actionPerformed(ActionEvent e)
{
//incrament masterIndex by 1
masterIndex++;
String[] nameList;//to store the array
String[] test1;//to store the array
String[] test2;//to store the array
String[] test3;//to store the array
try
{
nameList = open.getArrayName();//get the nameList array from the class
test1 = open.getArrayTest1();//get the test1 array from the class
test2 = open.getArrayTest2();//get the test2 array from the class
test3 = open.getArrayTest3();//get the test3 array from the class
name.txtname.setText(nameList[masterIndex]);//populate the txtname text field with the array
test.test1TextFild.setText(test1[masterIndex]);//populate the test1 text field with the array
test.test2TextFild.setText(test2[masterIndex]);//populate the test2 text field with the array
test.test3TextFild.setText(test3[masterIndex]);//populate the test3 text field with the array
}
catch (IOException x)
{
//displays an error message
System.out.println("Error");
}
}
}
//creats actionlistener for the save button
private class SaveButtonListener implements ActionListener
{
// executes when the button is clickd
public void actionPerformed(ActionEvent e)
{
//if masterIndex = -1 then you are not at index 0 of the arrays so you cant calculate
if(masterIndex != -1)
{
try
{
String[] nameList;//to store the array
String[] test1;//to store the array
String[] test2;//to store the array
String[] test3;//to store the array
nameList = open.getArrayName();//get the nameList array from the class
test1 = open.getArrayTest1();//get the test1 array from the class
test2 = open.getArrayTest2();//get the test2 array from the class
test3 = open.getArrayTest3();//get the test3 array from the class
String saveName;// to save the text in the name text field
saveName = name.txtname.getText();//gets the text form name text field
String saveGrade1;// to save the text in the test1 text field
saveGrade1 = test.test1TextFild.getText();//gets the text form test1 text field
String saveGrade2;// to save the text in the test2 text field
saveGrade2 = test.test2TextFild.getText();//gets the text form test2 text field
String saveGrade3;// to save the text in the test3 text field
saveGrade3 = test.test3TextFild.getText();//gets the text form test3 text field
List<String> name1List = Arrays.asList(nameList); //treats the array as an arrayList
List<String> test1List = Arrays.asList(test1);//treats the array as an arrayList
List<String> test2List = Arrays.asList(test2);//treats the array as an arrayList
List<String> test3List = Arrays.asList(test3);//treats the array as an arrayList
name1List.set(masterIndex, saveName);//changes of sets the value at the masterIndex to saveName
test1List.set(masterIndex, saveGrade1);//changes of sets the value at the masterIndex to saveGrade1
test2List.set(masterIndex, saveGrade2);//changes of sets the value at the masterIndex to saveGrade2
test3List.set(masterIndex, saveGrade3);//changes of sets the value at the masterIndex to saveGrade3
//opens the file for writing
PrintWriter outputFile = new PrintWriter("name.txt");
//writes the array to a text file
for(int index = 0; index < nameList.length; index++)
{
outputFile.println(nameList[index]);
}
//closes the file
outputFile.close();
//opens the file for writing
PrintWriter outputFile1 = new PrintWriter("grade1.txt");
//writes the array to a text file
for(int index1 = 0; index1 < test1.length; index1++)
{
outputFile1.println(test1[index1]);
}
//closes the file
outputFile1.close();
//opens the file for writing
PrintWriter outputFile2 = new PrintWriter("grade2.txt");
//writes the array to a text file
for(int index2 = 0; index2 < test2.length; index2++)
{
outputFile2.println(test2[index2]);
}
//closes the file
outputFile2.close();
//opens the file for writing
PrintWriter outputFile3 = new PrintWriter("grade3.txt");
//writes the array to a text file
for(int index3 = 0; index3 < test3.length; index3++)
{
outputFile3.println(test3[index3]);
}
//closes the file
outputFile3.close();
}
catch (IOException x)
{
//displays an error message
System.out.println("Error!");
}
}
else
{
//shows error message when masterIndex == -1
JOptionPane.showMessageDialog(null, "Please click (Next) first");
}
}
}
public static void main(String[] a)
{
// calls the project2 class
new project2();
}
}ERRORS
----jGRASP exec: javac -g project3.java
project3.java:17: cannot find symbol
symbol : class gradeTypePanel
location: class project3
public gradeTypePanel gradeType; //to reference the the grade Type Panel with the radio buttons
^
project3.java:18: cannot find symbol
symbol : class namePanel
location: class project3
public namePanel name; // to reference the name panel with the name text field
^
project3.java:19: cannot find symbol
symbol : class testPanel
location: class project3
public testPanel test;// to reference the test panel with the 3 test grade fields
^
project3.java:20: cannot find symbol
symbol : class resultPanel
location: class project3
public resultPanel result;// to reference the result panel with the result text field
^
project3.java:27: cannot find symbol
symbol : class openFile
location: class project3
public openFile open;// to reference the open file class
^
project3.java:40: cannot find symbol
symbol : class resultPanel
location: class project3
result = new resultPanel();
^
project3.java:42: cannot find symbol
symbol : class gradeTypePanel
location: class project3
gradeType = new gradeTypePanel();
^
project3.java:44: cannot find symbol
symbol : class namePanel
location: class project3
name = new namePanel();
^
project3.java:46: cannot find symbol
symbol : class testPanel
location: class project3
test = new testPanel();
^
project2.java:17: cannot find symbol
symbol : class gradeTypeLabel
location: class project2
public gradeTypeLabel gradeType; // to reference the the grade Type Label with the radio buttons
^
project2.java:18: cannot find symbol
symbol : class namePanel
location: class project2
public namePanel name; // to reference the name panel with the name text field
^
project2.java:19: cannot find symbol
symbol : class testPanel
location: class project2
public testPanel test; // to reference the test panel with the 3 test grade fields
^
project2.java:20: cannot find symbol
symbol : class resultPanel
location: class project2
public resultPanel result; // to reference the result panel with the result text field
^
project2.java:27: cannot find symbol
symbol : class openFile
location: class project2
public openFile open; // to reference the open file class
^
project2.java:40: cannot find symbol
symbol : class resultPanel
location: class project2
result = new resultPanel();
^
project2.java:42: cannot find symbol
symbol : class gradeTypeLabel
location: class project2
gradeType = new gradeTypeLabel();
^
project2.java:44: cannot find symbol
symbol : class namePanel
location: class project2
name = new namePanel();
^
project2.java:46: cannot find symbol
symbol : class testPanel
location: class project2
test = new testPanel();
^
project2.java:76: cannot find symbol
symbol : class CalcButtonListener
location: class project2
calcButton.addActionListener(new CalcButtonListener());// calls the ActionListener for the calcButton
^
project2.java:77: cannot find symbol
symbol : class PrevButtonListener
location: class project2
prevButton.addActionListener(new PrevButtonListener());// calls the ActionListener for the prevButto
^
project2.java:78: cannot find symbol
symbol : class NextButtonListener
location: class project2
nextButton.addActionListener(new NextButtonListener());// calls the ActionListener for the nextButton
^
project2.java:79: cannot find symbol
symbol : class SaveButtonListener
location: class project2
saveButton.addActionListener(new SaveButtonListener());// calls the ActionListener for the addButton
^
22 errors
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
