Monday, June 26, 2017

MAPAPP



https://www.liquidweb.com/kb/how-to-install-cassandra-on-centos-6/

Option -O (upper-case O) is important. Without this, curl will start dumping the downloaded file on the stdout. Using -O, it downloads the files in the same name as the remote server. In the above example, we are downloading strx25-0.9.2.1.tar.bz2, so the downloaded file will also be the same name.

yum update
yum search any-package

yum info any-package

yum install any-package
yum list something

yum list recent

yum list installed
yum list available

yum list all

lsof -i :port
lsof -i :80
https://tecadmin.net/install-java-8-on-centos-rhel-and-fedora/#
https://www.cyberciti.biz/faq/yum-install-wget-redhat-cetos-rhel-7/
https://tecadmin.net/install-apache-maven-on-centos/
CREATE KEYSPACE “KeySpace Name”
WITH replication = {'class': ‘Strategy name’, 'replication_factor' : ‘No.Of  replicas’}


https://tecadmin.net/install-java-8-on-centos-rhel-and-fedora/#

Sunday, May 28, 2017

Songs

http://www.mensxp.com/culture/music/34152-20-songs-that-will-give-you-all-the-feels-like-no-other-song.html?utm_source=FB&utm_medium=Paid

Friday, December 30, 2016

Saturday, December 10, 2016

Date Time in Java 8

package com.ldap;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class DateTimeTest {
private static final String DATE_FORMAT = "dd-M-yyyy hh:mm:ss a";
public static void main(String[] args) {
datetime();
}

private static void datetime() {
String dateInString = "22-1-2015 10:15:55 AM";
        LocalDateTime ldt = LocalDateTime.parse(dateInString, DateTimeFormatter.ofPattern(DATE_FORMAT));

        ZoneId singaporeZoneId = ZoneId.of("Asia/Singapore");
        System.out.println("TimeZone : " + singaporeZoneId);

        //LocalDateTime + ZoneId = ZonedDateTime
        ZonedDateTime asiaZonedDateTime = ldt.atZone(singaporeZoneId);
        System.out.println("Date (Singapore) : " + asiaZonedDateTime);

        ZoneId newYokZoneId = ZoneId.of("America/New_York");
        System.out.println("TimeZone : " + newYokZoneId);
        
        
    LocalDateTime localdate = LocalDateTime.now(newYokZoneId);
    LocalDateTime localdate2 = LocalDateTime.now();
    DateTimeFormatter fmt = DateTimeFormatter.ISO_DATE_TIME;
System.out.println("---> "+localdate.format(fmt));
System.out.println("---> "+localdate2.format(fmt));
        ZonedDateTime nyDateTime = asiaZonedDateTime.withZoneSameInstant(newYokZoneId);
        System.out.println("Date (New York) : " + nyDateTime);

        DateTimeFormatter format = DateTimeFormatter.ofPattern(DATE_FORMAT);
        System.out.println("\n---DateTimeFormatter---");
        System.out.println("Date (Singapore) : " + format.format(asiaZonedDateTime));
        System.out.println("Date (New York) : " + format.format(nyDateTime));
}

}

Tuesday, December 6, 2016

TO READ UP

7th Dec 2016
http://nixmash.com/java/know-your-spring-boot-embedded-servlet-container/
http://www.adam-bien.com/roller/abien/entry/java_8_completablefuture_example
https://spring.io/blog/2016/10/31/webinar-replay-consumer-driven-contracts-and-your-microservice-architecture
https://spring.io/blog/2016/10/27/spring-tips-circuit-breakers
https://www.sitepoint.com/javaone-2016-nucleus/
https://blogs.oracle.com/java/collections-refueled
https://www.infoq.com/articles/Testing-RxJava
http://www.nurkiewicz.com/2016/10/small-scale-stream-processing-kata-part_13.html
http://www.java-allandsundry.com/2016/09/spring-reactive-samples-mono-and-single.html
https://intelligentjava.wordpress.com/2016/10/22/memory-efficient-hashset-implementation-for-java/
http://www.adam-bien.com/roller/abien/entry/high_performance_java_ee_from
https://www.symphonious.net/2016/10/25/testinglmax-screenshots-with-selenium/
http://blog.takipi.com/google-guava-5-things-you-never-knew-it-can-do/
https://blog.codecentric.de/en/2016/09/scrum-unfinished-user-stories/
https://www.infoq.com/presentations/java9-reactive-programming
https://www.infoq.com/articles/rxjava-by-example
https://knes1.github.io/blog/2015/2015-10-19-streaming-mysql-results-using-java8-streams-and-spring-data.html
https://www.infoq.com/articles/Wiremock-testing-mocking-over-wire-stubs
http://www.java-allandsundry.com/2016/11/parallelizing-hystrix-calls.html
http://www.nurkiewicz.com/2016/10/reactive-programming-with-rxjava-book.html
https://vanwilgenburg.wordpress.com/2016/09/19/getting-started-with-akka-stream-kafka/
https://www.infoq.com/news/2016/09/JavaOne-2016-parallel-streams
http://www.adam-bien.com/roller/abien/entry/building_a_react_application_with

Thursday, November 24, 2016

Cassandra

To create a keyspace with Simple strategy 

CREATE KEYSPACE "Excalibur"

  WITH REPLICATION = {'class' : 'SimpleStrategy''replication_factor' : 1 };

https://docs.datastax.com/en/cql/3.1/cql/cql_reference/create_keyspace_r.html


Memory efficient collections framework

https://www.eclipse.org/collections/

Friday, November 4, 2016

Eventstream


http://www.nurkiewicz.com/2015/07/server-sent-events-with-rxjava-and.html
http://docs.spring.io/spring/docs/4.2.0.RC2/spring-framework-reference/htmlsingle/#mvc-ann-async-http-streaming

http://www.nurkiewicz.com/2015/07/server-sent-events-with-rxjava-and.html
https://infinitescript.com/2015/06/use-server-sent-event-in-spring-4-2/


https://github.com/cer/event-sourcing-examples

https://jersey.java.net/documentation/latest/sse.html

https://www.html5rocks.com/en/tutorials/eventsource/basics/#toc-reconnection-timeout

http://www.nurkiewicz.com/2014/11/converting-between-completablefuture.html

http://www.cs-repository.info/2016/08/server-sent-events.html

Sunday, October 2, 2016

Autowiring into filter in Spring application

If you are facing problems autowiring dependencies in your filter class in Spring application Use the following trick.




@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filter)
throws IOException, ServletException {
SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
...
...
...
...
...
}

$ ( Currency Sign ) Missing in Excel POI

If you are writing to a cell and find that currency sign is missing this could be because of the following reason.

Setting cell style is not enough

CellStyle dollarStyle=workbook.createCellStyle();
DataFormat df = workbook.createDataFormat();

dollarStyle.setDataFormat((short)8);


You also need to set the cell style to NUMERIC

cell.setCellType(Cell.CELL_TYPE_NUMERIC);


Sunday, August 21, 2016

App Ideas

list news paper stands nearby
Any electrical / cooker repair shops nearby  repair shops
Any small vendor like samosa , gol gappa , momo stand nearby
any place nearby to get some attestation done
price of newspaper in bangalore
price of liquor in bangalore ( brand wise)

Amazon groups : we can add amazon users to groups such as family , friends and share wallet etc.
Reporting of expenditure if amazon api is available.

Takecarefamily

cross marketplace integration.


all the above information though required is not available on google.

Monday, July 18, 2016