Download Oracle Java JDK / JRE from the terminal in an interactive manner. Useful when you want to download java in non-gui environment.

download_java.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

try:
    from urllib.request import Request, urlopen
except ImportError:  # python 2
    from urllib2 import Request, urlopen
import re
import os

valid_packages = ['jre', 'server-jre', 'jdk']
valid_java_versions = xrange(7, 9, 1)


def regex_websearch(url, pattern):
    req = Request(url)
    resp = urlopen(req)
    content = resp.read().decode('UTF-8')
    resp.close()
    match = re.search(pattern, content)
    return match


def download_binary(_file_name_, _req_):
    print "Downloading %s to %s " % (_req_.get_full_url(), _file_name_)
    resp = urlopen(_req_)
    CHUNK = 16 * 1024
    with open(_file_name_, 'wb') as fp:
        while True:
            chunk = resp.read(CHUNK)
            if not chunk:
                break
            fp.write(chunk)


def download_latest_java(java_version=8, package='server-jre', extension='tar.gz',
                         architecture='linux-x64'):
    if package not in valid_packages:
        print('Invalid Java package selection, valid packages are:')
        for valid_package in valid_packages:
            print('\t' + valid_package)
        return None

    url = "http://www.oracle.com"

    url_1 = url + "/technetwork/java/javase/downloads/index.html"
    pattern_1 = '\/technetwork\/java/\javase\/downloads\/' + package + str(java_version) + '-downloads-.+?\.html'
    match = regex_websearch(url_1, pattern_1)

    if match is None:
        print('Unable to download Java from ' + url_1)
        print('Website is down or script is outdated')
        return None

    # Finding tar.gz or rpm endpoint
    url_2 = url + match.group(0)
    pattern_2 = "http\:\/\/download.oracle\.com\/otn-pub\/java\/jdk\/[7-9]u[0-9]+?-.+?\/" + package + "-[7-9]u[0-9]+?-" + architecture + "." + extension
    match = regex_websearch(url_2, pattern_2)

    if match is None:
        print('Selected architecture.extension \"' + architecture + '.' + extension + '\" is not available')
        print('Visit \"' + url_2 + '\" to see available architectures and extensions')
        return None

    # Add cookie to request and download the file to current directory
    req = Request(match.group(0))
    req.add_header('Cookie', 'gpw_e24=http://www.oracle.com/;oraclelicense=accept-securebackup-cookie')
    file_name = os.path.basename(match.group(0))

    download_binary(file_name, req)


if __name__ == '__main__':
    selected_package = "jdk"
    selected_version = 8

    for index, item in enumerate(valid_packages):
        if item != selected_package:
            print "%s.%s" % (index + 1, item)
        else:
            print "%s.%s (Default)" % (index + 1, item)

    given_package = raw_input("Please select the package : ")

    if given_package in valid_packages:
        selected_package = given_package

    for index, item in enumerate(valid_java_versions):
        if item != selected_version:
            print "%s" % item
        else:
            print "%s (Default)" % item

    given_version = raw_input("Please select the version : ")

    try:
        if int(given_version) in valid_java_versions:
            selected_version = given_version
    except Exception as e:
        pass

    download_latest_java(selected_version, selected_package)

How to Use

Follow the below steps to download

wget --no-check-certificate https://gist.github.com/arulrajnet/7b261203499375bd0759/raw/download_java.py
chmod +x download_java.py
sudo cp download_java.py download_java

To run

./download_java

It will ask for the type of package you want to download and version of package want to download. Finally the selected file will be downloaded in the current directory