Array of linkedlist of object - help! plesse!

Question

I am writing an array of linkedlist and the elements of the linkedlist is an object carrying 2 interger. It didn't compile and the message is as follows:
C:\thesis5>javac testLL2.java
testLL2.java:22: cannot resolve symbol
symbol : variable vertexFanObj2
location: class testLL2
vertexFanObj2 = myLL2[ i].get(j);
^
1 error
My program is as follows:
import java.net.*;
import java.io.*;
import java.util.LinkedList;
public class testLL2 {
public static void main(String[] args) throws IOException {
int myLLLength;
Integer intObj;
LinkedList myLL2 [] = new LinkedList[10];
vertexFan vertexFanObj;
for (int i = 0; i < 10; i++) {
myLL2[ i] = new LinkedList();
for (int j=0; j < 5; j++) {
vertexFanObj = new vertexFan();
          vertexFanObj.setupVertex(j, -j);
myLL2.add(vertexFanObj);
for (int i = 0; i < 10; i++) {
myLLLength = myLL2[ i].size();
for (int j=0; j<myLLLength; j++) {
vertexFanObj2 = myLL2[ i].get(j);
System.out.println(vertexFanObj.vertex1+" "+vertexFanObj.vertex2);
class vertexFan {
int vertex1, vertex2;
void setupVertex(int vertexA, int vertexB) {
vertex1=vertexA;
vertex2=vertexB;
I 've got lost! Please kindly help you! Many thanks in advance!

Answer 1

for (int i = 0; i < 10; i++) {
myLL2[ i] = new LinkedList();
for (int j=0; j < 5; j++) {
vertexFanObj = new vertexFan();
vertexFanObj.setupVertex(j, -j);
myLL2.add(vertexFanObj);
for (int i = 0; i < 10; i++) {
myLLLength = myLL2[ i].size();
for (int j=0; j<myLLLength; j++) {
vertexFanObj2 = myLL2[ i].get(j);
System.out.println(vertexFanObj.vertex1+" "+vertexFanObj.vertex2);
} Its a scope issue.
You define vertexFanObj in a for loop. then try to access it from outside that for loop. (in another for loop)
for (int i = 0; i < 10; i++) {
myLL2[ i] = new LinkedList();
vertexFanObj = new vertexFan(); //I MOVED THIS LINE
for (int j=0; j < 5; j++) {
vertexFanObj.setupVertex(j, -j);
myLL2.add(vertexFanObj);
for (int i = 0; i < 10; i++) {
myLLLength = myLL2[ i].size();
for (int j=0; j<myLLLength; j++) {
vertexFanObj2 = myLL2[ i].get(j);
System.out.println(vertexFanObj.vertex1+" "+vertexFanObj.vertex2);
} should work properly...