invertedIndex print incorrectly

[GoogleCodeExporter]

What steps will reproduce the problem?
Step1 The datafile is 
{8,1,2,0,0;
 9,1,1,0,0;
 0,1,2,1,7;
 0,1,2,1,8}
Step2 I added the following code under the line in 1. 
for (int w = 0; w < this.V; w++){
     Posting[] postings = this.invertedIndex[w];
     System.out.println("word " + w + " appears in "+ postings.length + " docs");
     for (Posting posting : postings){
         System.out.print("word "+ w  +": ("+posting.docID + " ");
    }
    System.out.println();
 }


What is the expected output? What do you see instead?
 I expected to see a list of docId for each word. i.e.
word 0 appears in 2 docs
word 0: (0,1)
word 1 appears in 4 docs
word 1: (0,1,2,3) 
word 2 appears in 4 docs
word 2: (0,1,2,3)  
word 3 appears in 2 docs
word 3: (2,3) 
word 4 appears in 2 docs
word 4: (2,3) 

However, I only see the last docId for each word as follows. 
word 0 appears in 1 docs
word 0: (1 
word 1 appears in 1 docs
word 1: (3 
word 2 appears in 1 docs
word 2: (3 
word 3 appears in 1 docs
word 3: (3 
word 4 appears in 1 docs
word 4: (3 

Please provide any additional information below.
Q: What does this code snippet mean?
for (int w = 0; w < this.V; w++){
            this.invertedIndex[w] = list[w].toArray(new Posting[0]);//Posting[0]?
        }

Original issue reported on code.google.com by [email protected] on 4 Sep 2012 at 9:20