Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static final Pattern SIZED_IMAGE_URL_PATTERN = Pattern.compile("(http.*_)\\d+\\.(jpe?g|png)");

    /**
     * Swap the size of a sized image url, returning the new url.
     * 
     * Sized image urls encode the image (jpg, jpeg or png) with the image size at the suffix of the url.
     * 
     * For example: http://www.example.com/image_50.jpg With replacement 100 would return: http://www.example.com/image_100.jpg
     * 
     * @param url The sized image url.
     * @param size The new size of the image
     */
    public static String swapSizedImageUrlSize(String url, int size) {
        if (url == null)
            throw new IllegalArgumentException("url cannot be null");
        Matcher matcher = SIZED_IMAGE_URL_PATTERN.matcher(url);
        if (!matcher.matches())
            return url;
        return matcher.group(1) + size + "." + matcher.group(2);
    }
}