CODEWITHSUNDEEP
javalist
Minions
Minions

Reputation: 5477

populate list of list in java

I'm trying to fill a list of list List<List<String>> in Java, but when I print the elements, nothing appears!

my code:

List<String> temp = new ArrayList<>();
for (int z = 0; z < c.POSList.get("V").size(); z++) {
    temp.add(c.stemmer(c.POSList.get("V").get(z)).get(0));
    temp.addAll(c.ReturnListOFSynoums(c.stemmer(c.POSList.get("V").get(z)).get(0), ""));
    System.out.println(temp); // there are elements !
    verbsMatrix.add(temp);
    temp.clear();
}

for (int s = 0; s < verbsMatrix.size(); s++) {
    for (int r = 0; r < verbsMatrix.get(s).size(); r++) {
        System.out.print(verbsMatrix.get(s).get(r) + "  ");
    }
}

Upvotes: 0

Views: 890

Answers (1)

Taylor
Taylor

Reputation: 4086

You're clearing temp every time, this is the same instance you just added to verbsMatrix which you don't re-initialize.

Try declaring temp inside the for, and don't clear it.

Upvotes: 4

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