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Need help with java, a toString method in LinearNode class?

I have written the linearNode class but need help with toString method which returns the string version of the element only. Next field is not returned


public class LinearNode<T> {
private LinearNode<T> next;
private T element;

public LinearNode(T elem) {
this.next = null;
this.element = elem;
}

public LinearNode(){
this.element = null;
this.next = null;
}

public T getElement(){
return(this.element);
}
public void setElement(T elem){
this.element = elem;
}
public LinearNode<T>getNext(){
return(this.next);
}
public void setNext(LinearNode node){
this.next = node;
}

public boolean equalElement(LinearNode<T> node) throws NullPointerException{
if(this.element.equals(node.getElement())){
return true;
}
else{
return false;
}
}

public String toString(){
???????????????

}