Can someone help me with JAVA?

[Coffee Pom]

I'm having trouble with multidimensional arrays. I understand the regular ones but i just can't get a handle on the multi ones. The book i have (Teach Yourself in 24 hours) gives really tough examples and i don't understand them. I wish they had easier ones.

Could someone post a really really simple example of a multidimensional array so i can look at it and figure it out?

I wrote this program using a one-dimensional array so you can have some idea of where i am.

class Grades3 {
public static void main(String[] arguments) {
int[] studentGrade = { 98, 91, 60, 75, 78, 54, 100 };

int gradeSum = 0;
for (int i = 0; i < studentGrade.length; i++) {
gradeSum = gradeSum + studentGrade[i];
}
int gradeAvg = gradeSum / studentGrade.length;
System.out.println("The average grade for this student is " + gradeAvg);
}
}

I'd like to be able to use multi-dimensional arrays to include different students, etc.

I'm teaching myself JAVA and this is my first big roadblock. Help me out please!! And keep it VERY simple. http://www.helpfromtechs.com/ubb/smilies/smile.gif

Thanks! http://www.helpfromtechs.com/ubb/smilies/smile.gif

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[reddsteel]

I dont know Java but found some links...

Multidimensional Arrays (http://math.nist.gov/javanumerics/reports/jgfnwg-01.html#arrays)

Multi-Dimensional Arrays [developer.java.sun.com] (http://developer.java.sun.com/developer/onlineTraining/Programming/JDCBook/jnistring.html#multi)


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-- reddsteel
Moderator - HelpFromTechs.com
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<FONT COLOR="#800080" SIZE="1" FACE="Verdana, Arial">This message has been edited by reddsteel on December 24, 2000 at 08:22 AM</font>

[Coffee Pom]

Reddsteel,

Thanks for the links. I'll check them out!

Merry Christmas!

http://www.helpfromtechs.com/ubb/smilies/smile.gif

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[reddsteel]

Your welcome, and Merry Christmas to you also!

(BTW - Is Java worthwhile to learn?)

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-- reddsteel
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[Coffee Pom]

I tried those links and they are not really meant for people learning Java for the first time, however i did find what i was looking for elsewhere, so thanks anyway for the help.

I think it's worth learning in my profession. It's easier and more powerful than C++ and it can be used online as well as from the command line. I like it, but each to his own, as they say. http://www.helpfromtechs.com/ubb/smilies/smile.gif

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[reddsteel]

Sorry about the links. I defintely understand what you mean. Kind of like the Perl vs. PHP war... =)

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-- reddsteel
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[raaj]

Well, this can be very simple with this example...

public class MultiDim
{
public static void main(String argv[])
{
int num[][]={{1,2,3,4},
{5,6,7},
{8,9},
{10,11,12,13,14,15,16}};
for(int i=0;i&lt;num.length;i++)
{
for(int j=0;j&lt;num[i].length;j++)
{
System.out.print(num[i][j] + ",");
}
System.out.println("");
}
}
}

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Raaj...

[MikeFoster]

Hi raaj, welcome to the board!

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