Override toString to remove spaces between elements

Question

As you know, the toString() method called on a Vector output this

[foo, bar, item, item4]

This is pretty basic but, how could I get this instead (removing white spaces between elements)?

[foo,bar,item,item4]

Thank you all

EDIT: return nom.toString().replace(" ", ""); is not a solution !

Answer 1

Wrap your vector class and override toString.

import java.util.*;
class AwesomeVector<E> extends Vector<E> {

    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("[");
        for(int i = 0; i < size(); i++) {
           if(i != 0) sb.append(","); 
           sb.append(get(i));
        }
        sb.append("]");
        return sb.toString();
    }

    public static void main(String[] args) {
        AwesomeVector<String> av = new AwesomeVector<String>();
        av.add("This");
        av.add("is");
        av.add("a test");
        System.out.println(av.toString());
    }

}


C:\Documents and Settings\glowcoder\My Documents>javac AwesomeVector.java

C:\Documents and Settings\glowcoder\My Documents>java AwesomeVector
[This,is,a test]

Answer 2

Overriding only makes sense if you are subclassing Vector.

If you are, then you can use Apache Commons Lang's StringUtils.join as follows:

@Override
public String toString() {
    return "[" + StringUtils.join(this, ",") + "]";
}

If you want to stay in plain Java, glowcoder has the best answer.