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What are the role of Keywords in java? Keywords are identifiers such as public, static and class in which have a special meaning inside Java source code and outside of comments
What happens to the static fields of a class during serialization? There are three exceptions in which serialization does not necessarily read and write to the stream. These
Benefits of Spring framework : Spring can effectively organize your middle tier objects as given in the diagram above, whether or not you select to use EJB. Applications create
Wechat and SugarCRM Project Description: Seeking the partner able to develop wechat program to integrate with SugarCRM. Wechat Official Account able to perform some functi
What is a multicast delegate? Every delegate object holds reference to a single method. Though, it is possible for a delegate object to hold references of and invoke multiple m
You should override the hashCode() and equals() functions from the Object class. The default implementation of the hashcode() and equals(), which are inherited from the java.
Staging areas that have messages those have been sent and are waiting to be read. Note that, contrary to what the name queue suggests, messages don't have to be delivered in the or
Messaging is a method of communication among software components or applications. A messaging system is a peer-to-peer facility: A messaging client can send messages to, and receiv
How are this () and super() used with constructors? this() Constructors: is used to pointing current class instance. Can be used with methods or variables. Used to call
Explain abstract method in java? Java permits methods and classes to be declared abstract. An abstract method is not actually implemented in the class. It is merely declared th
package test.padovanstring;public class PadovanString {public int stringOccurrences(int n, String str){if(n >= 40)return -1;if(str.replaceAll("X|Y|Z","").length()>0)return -1;String res=pad(n);return(res.length() - res.replaceAll(str,"").length())/(str.length());}public String pad(int n){if(n == 0) return "X";if(n == 1) return "Y";if(n == 2) return "Z";else return pad(n-2) + pad(n-3);}public static void main(String []args){PadovanString p = new PadovanString();System.out.println(p.stringOccurrences(21,"YZ"));}}
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