Mam taki program:
package pl.java.moj_pakiet;
import java.util.Random;
public class Tab {
public static void main(String[] args) {
int tab[][] = new int [4][];
tab[0] = new int [3];
tab[1] = new int [4];
tab[2] = new int [5];
tab[3] = new int [1];
Tab go = new Tab();
go.Wprowadz(tab);
int tab2[][] = null;
go.Wypelnij(tab, tab2);
go.Wyswietl(tab2);
}
public void Wprowadz(int t[][])
{
Random rn = new Random();
int i, j;
int n = t.length;
for (i = 0; i < n; i++)
{
int m = t[i].length;
for (j = 0; j < m; j++)
t[i][j] = rn.nextInt();
}
}
public void Wypelnij(int t1[][], int t2[][])
{
int max = 0;
for (int i = 0; i < t1.length; i++)
if (max < t1[i].length)
max = t1[i].length;
t2 = new int [t1.length][max];
for (int i = 0; i < t1.length; i++)
{
for (int j = 0; j < t1[i].length; j++)
t2[i][j] = t1[i][j];
for (int j = t1[i].length; j < max; j++)
t2[i][j] = -5;
}
}
public void Wyswietl(int t[][])
{
for (int i = 0; i < t.length; i++)
{
for (int j = 0; j < t[i].length; j++)
System.out.println(t[i][j] + "\t");
System.out.println("\n");
}
}
}
Eclipse wyrzuca takie coś:
Exception in thread "main" java.lang.NullPointerException
at pl.java.moj_pakiet.Tab.Wyswietl(Tab.java:62)
at pl.java.moj_pakiet.Tab.main(Tab.java:22)
Czy to znaczy, że nie mogę utworzyć tablicy w funkcji?