array[] [] ?

[Jon Camilleri]

See anything wrong here?

public class TestSeven
{
	int[] [] magicNumbers = new int[] [];

	for (int x = 0; x < 10; x++)
	{
		for (int y = 0; y < 10; y++)
		{
			int[x][y] = x*y;
		}
	}

		for (int x = 0; x < 10; x++)
		{
			for (int y = 0; y < 10; y++)
			{
				System.out.println(int[x,y]);
			}
		}

	ArrayList<int[][]> magicNumbersList = new ArrayList<magicNumbersList>(magicNumbers);

		for (int[][] numbersInList: x < magicNumbersList.size())
		{
				System.out.println(magiNumbersList.get(i);
		}

}

Output: Tool completed with exit code 2

[Jon Camilleri]

public class TestSeven
{
	int[][] magicNumbers  = null;

	for (int x = 0; x < 10; x++)
	{
		for (int y = 0; y < 10; y++)
		{
			magicNumbers[x][y] = x*y;
		}
	}

		for (int x = 0; x < 10; x++)
		{
			for (int y = 0; y < 10; y++)
			{
				System.out.println(magicNumbers[x][y]);
			}
		}

	ArrayList<int[][]> magicNumbersList = new ArrayList<magicNumbersList>();
	magicNumbersList.addAll(magicNumbers);

		for (int[][] numbersInList: x < magicNumbersList.size)
		{
				System.out.println(magicNumbersList.get(i));
		}


}

[Greg Brannon]

Your line:

int[] [] magicNumbers = new int[] [];

Is an incomplete declaration/creation of the array. Why?

[Matthew Brown]

And:

new ArrayList<magicNumbersList>()

is incorrect - the bit in < > must be a type, not a variable.

[Jon Camilleri]

Matthew Brown wrote:And:

new ArrayList<magicNumbersList>()

is incorrect - the bit in < > must be a type, not a variable.

public class TestSeven
{
	int[][] magicNumbers  = {{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0},
							{0,0,0,0,0,0,0,0,0,0}};
	for (int x = 0; x < 10; x++)
	{
		for (int y = 0; y < 10; y++)
		{
			magicNumbers[x][y] = x*y;
		}
	}

		for (int x = 0; x < 10; x++)
		{
			for (int y = 0; y < 10; y++)
			{
				System.out.println(magicNumbers[x][y]);
			}
		}

	ArrayList<int[][]> magicNumbersList = new ArrayList<int[][]>(magicNumbersList);
	magicNumbersList.addAll(magicNumbers);

		for (int[][] numbersInList: x < magicNumbersList.size)
		{
				System.out.println(magicNumbersList.get(i));
		}


}

Output
C:\Documents and Settings\Jon\workspace\JavaDev\myCode Snippets\TestSeven.java:15: illegal start of type
for (int x = 0; x < 10; x++)
^
C:\Documents and Settings\Jon\workspace\JavaDev\myCode Snippets\TestSeven.java:15: illegal start of type
for (int x = 0; x < 10; x++)
^
C:\Documents and Settings\Jon\workspace\JavaDev\myCode Snippets\TestSeven.java:15: <identifier> expected
for (int x = 0; x < 10; x++)
^
C:\Documents and Settings\Jon\workspace\JavaDev\myCode Snippets\TestSeven.java:23: illegal start of type
for (int x = 0; x < 10; x++)
^
C:\Documents and Settings\Jon\workspace\JavaDev\myCode Snippets\TestSeven.java:23: illegal start of type
for (int x = 0; x < 10; x++)
^
C:\Documents and Settings\Jon\workspace\JavaDev\myCode Snippets\TestSeven.java:23: <identifier> expected
for (int x = 0; x < 10; x++)
^
6 errors

Tool completed with exit code 1


NOTE: By the way the copy to clipboard option on this forum does not seem to work with my laptop, I am using Google Chrome.

[Greg Brannon]

An equivalent declaration/creation and initialization of your array would have been:

int[][] magicNumbers = new int[10][10];

Did you mean to write your code inside a method? Maybe a main() method? It doesn't have to be main(), but it should be in a method.

[Jesper de Jong]

You cannot put arbitrary statements like "for" at class level. Those statements must be inside a constructor or method.

Jon Camilleri wrote:NOTE: By the way the copy to clipboard option on this forum does not seem to work with my laptop, I am using Google Chrome.

Workaround: Click "view plain" instead of "copy to clipboard", then select the text in the popup window and copy it with Ctrl+C.

[Jon Camilleri]

Jesper de Jong wrote:You cannot put arbitrary statements like "for" at class level. Those statements must be inside a constructor or method.

Jon Camilleri wrote:NOTE: By the way the copy to clipboard option on this forum does not seem to work with my laptop, I am using Google Chrome.

Workaround: Click "view plain" instead of "copy to clipboard", then select the text in the popup window and copy it with Ctrl+C.

lol, how could I forget to create a method() that Java actually looks into for executing code, btw is '...' considered valid for passing arguments?

public static void main (String... args)

	{//do smth... }

[Jesper de Jong]

The "..." is called varargs, one of the new features of Java 5.