Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Returns a string containing len times comma separated ? placeholders.
     * i.e. ?, ?, ?, ? for len = 4
     * 
     * @param len
     * @return
     */
    public static String makePlaceholders(int len) {

        if (len < 1) {
            // It will lead to an invalid query anyway ..
            throw new RuntimeException("No placeholders");
        } else {
            StringBuilder sb = new StringBuilder(len * 2 - 1);
            sb.append("?");
            for (int i = 1; i < len; i++) {
                sb.append(",?");
            }
            return sb.toString();
        }
    }
}