PrintNode.java

public class PrintNode extends Node
{
    public Node expression;
    public String type;
    
    public PrintNode() {}
    
    public PrintNode(Node expression, String type)
    {
        this.expression = expression;
        this.type = type;
    }
    
    public Object eval()
    {
        Object writee = expression.eval();
        
        if (type.equals("sameline")) System.out.print(writee);
        else if (type.equals("newline")) System.out.println(writee);
        
        return writee;
    }    
}