May 25

Why StringBuffer and StringBuilder has not overridden equals() and hashCode()

Comparing Two Strings: If we want to compare two strings,we can simply use equals() as below String str1=new String("nataraz");     String str2=new String("nataraz");      System.out.println(str1.equals(str2));//prints true     System.out.println(str1==str2);//prints false     System.out.println(str1.hashCode()+":"+str2.hashCode());//returns same value hashCode() is overrided in String class,and … Continue reading

May 13

Scott SQL script

Since Mr scott left Oracle corporation,Scott user is removed from Oracle database 10 onwards.But If you want to  have them,you can create them manually.Here is the process and script to create them manually. 1.Login to Oracle using any user having … Continue reading

Mar 23

hadoop Ebooks Download

  Please Feel free to download below hadoop ebooks,which are the best books to start with…Please report us for any broken links. Apache.Hadoop.YARN_.Sample Cassandra_The_Definitive_Guide Data_Analytics_Models_and_Algorithms Data_Mining_and_Business_Analytics_with_R__Johannes_Ledolter Exploring_Splunk Hadoop in Action Hadoop in Practice Hadoop The Definitive Guide 2nd Edition hadoop_real-world_solutions_cookbook … Continue reading