Java java.lang.NoClassDefFoundError

[ares623]

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ahh mao diay.. so kung mag-run ka, i-apil pud diay nimo ang -classpath option? mao diay, wa ko kabantay dah naa man diay sa libro. hehe ahak oi. pero hasol man sige type sa classpath, unsaon man nga i-set na daan? naa na koy CLASSPATH variable sa environment variables pero dili man gihapon pwede..

[javapenguin]

Kung WinXP imo gigamit

Control Panel > System > Advanced > Environment Variables

Under System Variables

Edit or Add (New), hibaw na ka unsa buhaton pagmakita na nimo ang display, basta use semicolon as separator sa classpath or path:

Path
Classpath

----------------------------------------------------------------
This is not a consistent approach, and not all windows will respond accordingly so I recommend the other method but make a batch file for shorcut. So you don't have to type very long in every execution.

[ares623]

ah ako na na gi-buhat kana mga Environment variables. ang path sa package man i-butang sa? wala man gihapon. hehe. unsaon man na ang batch file?

[javapenguin]

Go to command prompt then type

For example

copy con myproject.bat

<Press Enter>

java -cp c:\main\;c:\shared_class\;c:\mysqlconj\mysql-connector-java-3.1.12\mysql-connector-java-3.1.12-bin.jar\; Main

<Press F6>

myproject

<Press Enter>

Then enjoy viewing your java program

[ares623]

^wala ko ka-kuha ana nga command dah.. hehe. unsa na ang "copy con" nga command?
akong package directory kay naa sa C:\Java\Packages, nya akong main program naa sa My Documents...

naa pud ko lain question, lahi na topic pero ari lang ko post. hehe.
nag himo ko lain .java file sa package, Rectangle.java, nya naa koy main program, MyRect.java. Post lang nako ang code.. hehe.
Rectangle.java

package Geometry;
public class Rectangle{
	public Rectangle(){
		point[0].setPoints(0,0);
		point[1].setPoints(1,0);
		point[2].setPoints(0,1);
		point[3].setPoints(1,1);
	}
	public Rectangle(double point1_x,double point1_y,double point2_x, double point2_y){
		point[0].setPoints(point1_x, point1_y);
		point[3].setPoints(point2_x, point2_y);
		point[1].setPoints(point2_x, point1_y);
		point[2].setPoints(point1_x, point2_y);
	}
	public Rectangle(final Rectangle oldRect){
		point[0] = oldRect.point[0];
		point[3] = oldRect.point[3];
		point[1] = oldRect.point[1];
		point[2] = oldRect.point[2];
	}
	public double getWidth(){
		return point[0].distance(point[1]);
	}
	public static void printRectangle(final Rectangle rect){
		for(int i= 0;i<4;i++){
			System.out.println("Corner"+(i+1)+" X: "+rect.point[i].getX()+" Corner"+(i+1)+" Y: "+rect.point[i].getY());
		}
		System.out.println();
	}
	Point&#91;] point = new Point[4];
}

MyRect.java

import Geometry.*;
public class MyRect{
	public static void main(String[] args){
		Rectangle myRect = new Rectangle(0,0,2,1);
		Rectangle copyRect = new Rectangle(myRect);
		printRectangle(myRect);
		double width = myRect.getWidth();
	}
}

mag-error lagi og "Symbol not found"? ang methods nako (printRectangle, getWidth) kay dil ma-work..

[ares623]

bump lang ko.. ehehe

[javapenguin]

You can use a simple text editor like a Notepad instead of copy con, actually you don't need a batch file if you don't mind typing long.

Post your questions under Java Programming

[eax]

Why not try to use apache ant. It will make your java programming easier.

http://ant.apache.org/

[javapenguin]

Good idea, as long you no longer use win9x coz the latest version of ant no longer support this.

[eax]

Good idea, as long you no longer use win9x coz the latest version of ant no longer support this.

dili na support sa windows ang ant kay naa may nant http://nant.sourceforge.net/. According to the site : "NAnt is a free .NET build tool. In theory it is kind of like make without make's wrinkles. In practice it's a lot like Ant."