Alright, so for the output:

0 2 4 6 8 10
1 3 5 7 9 11
3 6 9 12 15 18
6 10 14 18 22 26
... (the pattern presented goes on forever)

a code must be written to create it. I know I need a for loop, or a loop of some kind.
But, I don't even know where to begin with this!

You will need nested loops. The inner loop will print one line of numbers, while the outer loop controls how the pattern changes for the inner loop.

If you're still stuck, try solving the problem in steps. First create a loop that will print just one line of the pattern. Then make it repeat that same line many times. Then finally make the pattern change from line to line.

Also - should the first line not be 0 1 2 3 4 5?

public class OddNum{
public static void main(String args[])
{
for(int a=0;a<11;a=a+2)
System.out.println(a);
}
}
...
OutPut
0 2 4 6 8 10





second program to print
1 3 5 7 9

public class EvenNum{
public static void main(String args[])
{
for(int a=1;a<10;a=a+2)
System.out.println(a);
}
}

Output:
1 3 5 7 9

third program to print
3 6 9 12 15 18

public class Third{
public static void main(String args[])
{
for(int a=3;a<20;a=a+3)
System.out.println(a);
}
}

output:
3 6 9 12 15 18



fourth program,
6 10 14 18 22 26

public class ForthProg{
public static void main(String args[])
{
for(int a=6;a<27;a=a+4)
System.out.println(a);
}
}

OutPut
6 10 14 18 22 26

these Programs are TESTED and 100% Working Without Errors

Regards
Umair Sario
<SNIP>

I think his problem is by putting them all together in one class, and determining the value to add each time.

hmmm in one program its also easy, he can do it also, if he know java ! well let me also post all these program into 1 class code ..

No, don't. Read the terms and conditions of this forum again (which you agreed to when you signed up here), as you've already violated them once, with your first post, don't do it a second time with just your third.

that is the main issue, yes
best is to let him try to do it himself

public class GNumProg{
public static void main(String args[])
{
for(int a=0;a<11;a=a+2)
{
System.out.println(a);}
for(int a=1;a<10;a=a+2)
{
System.out.println(a);}
for(int a=3;a<20;a=a+3)
{
System.out.println(a);}

for(int a=6;a<27;a=a+4)
{
System.out.println(a);}



}
}

..
this is also the simplest way to print series mentioned above ...
there are alot of ways to print but this one is simplest

Actually what you wrote umairsario is wrong, and other good programmers will agree with me. Actually I dare to call it stupid. If I was thinking your way I good make a better (and more stupid) program:


The idea is to use 2 for-loops and everything would be dynamically, so you could have N lines and M columns.

The pattern to be followed is this:

The difference of the elements of two rows increases by 1
0 (0 + 0) (row = 1 index of for loop is 0)
1 (0 + 1) (row = 2 index of for loop is 1)
3 (1 + 2) (row = 3 index of for loop is 2)
6 (3 + 3) (row = 4 index of for loop is 3)
10 (6 + 4) (row = 5 index of for loop is 4)
15 (10 + 5) (row = 6 index of for loop is 5)

And for the columns each element is added the row num:
First row: 0 1(0+1) 2(1+1) 3(2+1) 4(3+1)
Second row: 1 3(1+2) 5(3+2) 7(5+2) 9(7+2)

ya but i m new Programmer to Java :d
well sir can you please explain Abstract and Interface i m bit confused and unable to understand these both