Package corejava.Math not found error !??

Question

hi, I tried to compile this code but got the
following error message ----
what does it mean ????
==================================================
TextSummary.java:17: Package corejava.Math not found in import.
import corejava.Math.*;
^
TextSummary.java:18: Package corejava not found in import.
import corejava.*;
^
2 errors
==================================================
/** * @(#)TextSummary.java * * Copyright (c) 2000 by Sundar Dorai-Raj
* * @author Sundar Dorai-Raj
* * Email: [email protected]
* * This program is free software; you can redistribute it and/or
* * modify it under the terms of the GNU General Public License
* * as published by the Free Software Foundation; either version 2
* * of the License, or (at your option) any later version,
* * provided that any use properly credits the author.
* * This program is distributed in the hope that it will be useful,
* * but WITHOUT ANY WARRANTY; without even the implied warranty of
* * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* * GNU General Public License for more details at http://www.gnu.org * * */
package corejava.Graphics;
import java.awt.*;
import corejava.Math.*;
import corejava.*;
public class TextSummary extends Canvas {
private Univariate x=null;
private int width,height;
private Dimension size;
private Font font;
private boolean box;
private int[] margins;
private Color textColor;
private Image offScrImage;
private Graphics offScrGraphics;
/* define constants */
public final static Font DEFAULT_FONT=new Font("Courier",Font.PLAIN,10);
public final static Color DEFAULT_COLOR=Color.black;
public final static Format f=new Format("%1.4f");
public TextSummary() { super(); }
public void addNotify() {
super.addNotify();
offScrImage=createImage(width,height);
offScrGraphics=offScrImage.getGraphics();
public void update(Graphics g) {
paint(offScrGraphics);
g.drawImage(offScrImage,0,0,this);
public TextSummary(int width,int height) {
this.width=width;
this.height=height;
size=new Dimension(width,height);
margins=new int[4];
margins[0]=10;
margins[1]=10;
margins[2]=10;
margins[3]=10;
super.setBackground(Color.white);
box=false;
font=DEFAULT_FONT;
textColor=DEFAULT_COLOR;
public TextSummary(int width,int height,Font font,Color textColor) {
this.width=width;
this.height=height;
size=new Dimension(width,height);
margins=new int[4];
margins[0]=10;
margins[1]=10;
margins[2]=10;
margins[3]=10;
super.setBackground(Color.white);
box=false;
this.font=font;
this.textColor=textColor;
public TextSummary(int width,int height,boolean box) {
this.width=width;
this.height=height;
size=new Dimension(width,height);
this.box=box;
margins=new int[4];
margins[0]=10;
margins[1]=10;
margins[2]=10;
margins[3]=10;
super.setBackground(Color.white);
font=DEFAULT_FONT;
textColor=DEFAULT_COLOR;
public TextSummary(int width,int height,Font font,Color textColor,boolean box) {
this.width=width;
this.height=height;
size=new Dimension(width,height);
this.box=box;
margins=new int[4];
margins[0]=10;
margins[1]=10;
margins[2]=10;
margins[3]=10;
super.setBackground(Color.white);
this.font=font;
this.textColor=textColor;
public void newData(double[] data,boolean plot) {
x=new Univariate(data);
if(plot) repaint();
public void newData(Univariate data,boolean plot) {
x=data;
if(plot) repaint();
public void setMargins(int[] margins) {
this.margins=(int[])margins.clone();
public void setGraphicsParams(Font font,Color textColor,boolean box) {
this.font=font;
this.textColor=textColor;
this.box=box;
public void paint(Graphics g) {
if(x==null) return;
g.setColor(Color.white);
g.fillRect(0,0,width-1,height-1);
g.setFont(font);
g.setColor(textColor);
FontMetrics fm=getFontMetrics(font);
int yOrigin=height,
xOrigin=0,
bottom=-margins[0],
left=margins[1],
top=margins[2],
right=margins[3],
center=(int)((width-left-right)*.5),
quarter=(int)((width-left-right)*0.25),
textWidth,
textHeight=fm.getHeight();
textWidth=fm.stringWidth("Summary");
g.drawString("Summary",left+center-(int)(textWidth*.5),top+textHeight);
g.drawLine(left,top+textHeight+2,width-right,top+textHeight+2);
g.drawLine(left,top+textHeight+3,width-right,top+textHeight+3);
textWidth=fm.stringWidth("N");
g.drawString("N",quarter-textWidth,top+2*textHeight);
textWidth=fm.stringWidth(""+x.size());
g.drawString(""+x.size(),center-textWidth,top+2*textHeight);
textWidth=fm.stringWidth("Mean");
g.drawString("Mean",quarter-textWidth,top+3*textHeight);
textWidth=fm.stringWidth(f.form(x.mean()));
g.drawString(f.form(x.mean()),center-textWidth,top+3*textHeight);
textWidth=fm.stringWidth("Var");
g.drawString("Var",quarter-textWidth,top+4*textHeight);
textWidth=fm.stringWidth(f.form(x.variance()));
g.drawString(f.form(x.variance()),center-textWidth,top+4*textHeight);
textWidth=fm.stringWidth("Stdev");
g.drawString("Stdev",quarter-textWidth,top+5*textHeight);
textWidth=fm.stringWidth(f.form(x.stdev()));
g.drawString(f.form(x.stdev()),center-textWidth,top+5*textHeight);
textWidth=fm.stringWidth("SE");
g.drawString("SE",quarter-textWidth,top+6*textHeight);
textWidth=fm.stringWidth(f.form(x.SE()));
g.drawString(f.form(x.SE()),center-textWidth,top+6*textHeight);
textWidth=fm.stringWidth("Min");
g.drawString("Min",3*quarter-textWidth,top+2*textHeight);
textWidth=fm.stringWidth(f.form(x.min()));
g.drawString(f.form(x.min()),width-right-textWidth,top+2*textHeight);
textWidth=fm.stringWidth("Q1");
g.drawString("Q1",3*quarter-textWidth,top+3*textHeight);
textWidth=fm.stringWidth(f.form(x.quant(0.25)));
g.drawString(f.form(x.quant(0.25)),width-right-textWidth,top+3*textHeight);
textWidth=fm.stringWidth("Median");
g.drawString("Median",3*quarter-textWidth,top+4*textHeight);
textWidth=fm.stringWidth(f.form(x.median()));
g.drawString(f.form(x.median()),width-right-textWidth,top+4*textHeight);
textWidth=fm.stringWidth("Q3");
g.drawString("Q3",3*quarter-textWidth,top+5*textHeight);
textWidth=fm.stringWidth(f.form(x.quant(0.75)));
g.drawString(f.form(x.quant(0.75)),width-right-textWidth,top+5*textHeight);
textWidth=fm.stringWidth("Max");
g.drawString("Max",3*quarter-textWidth,top+6*textHeight);
textWidth=fm.stringWidth(f.form(x.max()));
g.drawString(f.form(x.max()),width-right-textWidth,top+6*textHeight);
g.drawLine(left,top+6*textHeight+2,width-right,top+6*textHeight+2);
g.drawLine(left,top+6*textHeight+3,width-right,top+6*textHeight+3);
/* Canvas Functions */
public Dimension getPreferredSize() {
return(size);
public Dimension getMinimumSize() {
return(size);

Answer 1

I'd guess there's a package corejava.Math, which is needed for this code to compile, but you don't have it...