/*-------------------------------------------------------------------*
 * NTU Student: Java With Engineering Applications, Spring 1999
 * Assignment # 4 - Java How To Program 2nd edition, Deitel & Deitel
 * Problem 8.12 on page 461 - CLASS Number applet created to practice
 * string tokenization techniques
 *
 * Michael Kusmierz
 * Xerox Corporation
 * Rev 1.0	May 4, 1999 
 *
 * This code represents a students work in progress 
 * and is not to be used beyond that purpose.
 *-------------------------------------------------------------------*/ 


import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
/**
 * This type was created in VisualAge.
 */
public class Number extends Applet implements ActionListener {
	private Button ivjbtnTokenize = null;
	private Label ivjlblProblemTitle = null;
	private TextArea ivjTextArea1 = null;
	private TextField ivjtxtField = null;
	private Label ivjlblEnterNumber = null;
/*****************************************************************************
 * This method was created in VisualAge.
 * @param e ActionEvent
 */
public void actionPerformed( ActionEvent e ) {
	
	tokenizationProcess();
}
/*****************************************************************************
 * Gets the applet information.
 * @return java.lang.String
 */
public String getAppletInfo() {
	return "Number created using VisualAge for Java.";
}
/*****************************************************************************
 * Return the btnTokenize property value.
 * @return java.awt.Button
 */
/* WARNING: THIS METHOD WILL BE REGENERATED. */
private Button getbtnTokenize() {
	if (ivjbtnTokenize == null) {
		try {
			ivjbtnTokenize = new java.awt.Button();
			ivjbtnTokenize.setName("btnTokenize");
			ivjbtnTokenize.setBounds(177, 54, 63, 23);
			ivjbtnTokenize.setLabel("Tokenize");
			// user code begin {1}
			// user code end
		} catch (java.lang.Throwable ivjExc) {
			// user code begin {2}
			// user code end
			handleException(ivjExc);
		}
	};
	return ivjbtnTokenize;
}
/**
 * Return the lblEnterNumber property value.
 * @return java.awt.Label
 */
/* WARNING: THIS METHOD WILL BE REGENERATED. */
private Label getlblEnterNumber() {
	if (ivjlblEnterNumber == null) {
		try {
			ivjlblEnterNumber = new java.awt.Label();
			ivjlblEnterNumber.setName("lblEnterNumber");
			ivjlblEnterNumber.setText("Enter a number: ex. (123) 456-7890");
			ivjlblEnterNumber.setBounds(10, 31, 211, 23);
			// user code begin {1}
			// user code end
		} catch (java.lang.Throwable ivjExc) {
			// user code begin {2}
			// user code end
			handleException(ivjExc);
		}
	};
	return ivjlblEnterNumber;
}
/*****************************************************************************
 * Return the lblProblemTitle property value.
 * @return java.awt.Label
 */
/* WARNING: THIS METHOD WILL BE REGENERATED. */
private Label getlblProblemTitle() {
	if (ivjlblProblemTitle == null) {
		try {
			ivjlblProblemTitle = new java.awt.Label();
			ivjlblProblemTitle.setName("lblProblemTitle");
			ivjlblProblemTitle.setFont(new java.awt.Font("dialog", 1, 12));
			ivjlblProblemTitle.setText("Problem 8.12 Telephone Number Tokenizer");
			ivjlblProblemTitle.setBounds(7, 7, 256, 23);
			// user code begin {1}
			// user code end
		} catch (java.lang.Throwable ivjExc) {
			// user code begin {2}
			// user code end
			handleException(ivjExc);
		}
	};
	return ivjlblProblemTitle;
}
/*****************************************************************************
 * Return the TextArea1 property value.
 * @return java.awt.TextArea
 */
/* WARNING: THIS METHOD WILL BE REGENERATED. */
private TextArea getTextArea1() {
	if (ivjTextArea1 == null) {
		try {
			ivjTextArea1 = new java.awt.TextArea();
			ivjTextArea1.setName("TextArea1");
			ivjTextArea1.setBounds(10, 88, 232, 217);
			// user code begin {1}
			// user code end
		} catch (java.lang.Throwable ivjExc) {
			// user code begin {2}
			// user code end
			handleException(ivjExc);
		}
	};
	return ivjTextArea1;
}
/*****************************************************************************
 * Return the txtField property value.
 * @return java.awt.TextField
 */
/* WARNING: THIS METHOD WILL BE REGENERATED. */
private TextField gettxtField() {
	if (ivjtxtField == null) {
		try {
			ivjtxtField = new java.awt.TextField();
			ivjtxtField.setName("txtField");
			ivjtxtField.setText("(555) 555-5555");
			ivjtxtField.setBounds(8, 55, 110, 23);
			// user code begin {1}
			// user code end
		} catch (java.lang.Throwable ivjExc) {
			// user code begin {2}
			// user code end
			handleException(ivjExc);
		}
	};
	return ivjtxtField;
}
/****************************************************************************
 * Called whenever the part throws an exception.
 * @param exception java.lang.Throwable
 */
private void handleException(Throwable exception) {

	/* Uncomment the following lines to print uncaught exceptions to stdout */
	// System.out.println("--------- UNCAUGHT EXCEPTION ---------");
	// exception.printStackTrace(System.out);
}
/********************************************************************************
 * INIT - Handle the Applet init method.
 */
/* WARNING: THIS METHOD WILL BE REGENERATED. */
public void init() {
	super.init();
	try {
		setName("Number");
		setLayout(null);
		setSize(318, 334);
		add(gettxtField(), gettxtField().getName());
		add(getbtnTokenize(), getbtnTokenize().getName());
		add(getTextArea1(), getTextArea1().getName());
		add(getlblProblemTitle(), getlblProblemTitle().getName());
		add(getlblEnterNumber(), getlblEnterNumber().getName());
		// user code begin {1}
		
		ivjbtnTokenize.addActionListener(this);
		ivjTextArea1.setEditable(false);

		
		// user code end
	} catch (java.lang.Throwable ivjExc) {
		// user code begin {2}
		// user code end
		handleException(ivjExc);
	}
}
/*****************************************************************************
 * main entrypoint - starts the part when it is run as an application
 * @param args java.lang.String[]
 */
public static void main(java.lang.String[] args) {
	try {
		Frame frame;
		try {
			Class aFrameClass = Class.forName("com.ibm.uvm.abt.edit.TestFrame");
			frame = (Frame)aFrameClass.newInstance();
		} catch (java.lang.Throwable ivjExc) {
			frame = new Frame();
		}
		Number aNumber;
		Class iiCls = Class.forName("Number");
		ClassLoader iiClsLoader = iiCls.getClassLoader();
		aNumber = (Number)java.beans.Beans.instantiate(iiClsLoader,"Number");
		frame.add("Center", aNumber);
		frame.setSize(aNumber.getSize());
		frame.setVisible(true);
	} catch (Throwable exception) {
		System.err.println("Exception occurred in main() of java.applet.Applet");
		exception.printStackTrace(System.out);
	}
}
/*******************************************************************************
 * TOKENIZATION PROCESS - This method takes in a phone number string and 
 * tokenizes it. Then the strings are converted to numbers.
 * If entry errors are detected, the user is informed with a warning and the
 * best guess is given.
 */
private void tokenizationProcess() {
		
	String strS = new String("");
	String[] strTokensArray = {"","","","","",""};

	String strAreaCode, strPhoneNum;
	int intAreaCode=0;	
	long lngPhoneNum=0;
	int i = 0;

	//--- get the inputed phone number
	strS = ivjtxtField.getText();
	
	//--- Change delimiter characters within tokenization process
	
	strS = strS.replace('(','\n'); 
	strS = strS.replace(')','\n'); 
	strS = strS.replace('-','\n');
	
	//--- Tokenize with java.util.*
	
	StringTokenizer tokens = new StringTokenizer(strS);

	ivjTextArea1.append(""+tokens.countTokens() +" Token Strings:" + "\n");
	i=0;
	while ( tokens.hasMoreTokens() && i<6 ) {
		strTokensArray[i] = tokens.nextToken();
		ivjTextArea1.append("\t"+strTokensArray[i] + "\n");
		i++;
	}
	ivjTextArea1.append("-------------------Results---------------------------"+"\n");
	
	//--- Check for three tokens
	
	if (i!=3)
		ivjTextArea1.append(">POOR ENTRY FORMAT."+ "\n");
	
	
	//--- Build strings and do some validity checks
	
	strAreaCode = strTokensArray[0].trim();
	if ( strAreaCode.length() != 3 )
		ivjTextArea1.append(">AREA CODE REQUIRES 3 DIGITS."+ "\n");
	
	strPhoneNum = strTokensArray[1].trim() + strTokensArray[2].trim();
	if (strPhoneNum.length() != 7)
		ivjTextArea1.append(">PHONE# REQUIRES 7 DIGITS."+ "\n");
	
	//--- Convert strings to numbers per problem statement 8.12
	
	try {
		intAreaCode = Integer.parseInt(strAreaCode);
		lngPhoneNum = Long.parseLong(strPhoneNum);
	} catch (Throwable exception) {
		ivjTextArea1.append(">TRY AGAIN-NUMBERS PLEASE."+ "\n");
		//System.err.println("Exception occurred in main() of java.applet.Applet");
		//exception.printStackTrace(System.out);
	}	
	
	//--- Update display
	
	ivjTextArea1.append("AREA CODE (int) = \t"+intAreaCode + "\n");
	ivjTextArea1.append("PHONE #  (long) = \t"+lngPhoneNum + "\n");
	ivjTextArea1.append("\n<Enter Next Number to Tokenize...>"+ "\n");

}
}