Java Interview questions – Page 2

Minimum Deletion Cost to Avoid Repeating LettersMinimum Deletion Cost to Avoid Repeating Letters

How to access REF CURSOR Data in Java ?

November 12, 2017 youvcode

In Java, a REF CURSOR is known as a ResultSet object and can be accessed as shown below: import oracle.jdbc.*; … CallableStatement cstmt; ResultSet cursor; // Use a PL/SQL block

Convert List to a Set / Set to List in Java

November 7, 2017 youvcode

In Java, When we are working on real time projects.. Generally we came across scenarios like Converting List to Set Object or Vice Versa. 1.

Swipe 2 Numbers without using Third Variable or Temp Variable | Interview question

October 31, 2017 youvcode

While giving interviews, Interviewers generally asks questions which tests logical thinking of candidate. This is one of the questions I faced while giving Interviews. There

JAR vs. WAR vs. EAR

October 28, 2017 youvcode

In J2EE application modules are packaged as EAR, JAR and WAR based on their functionality JAR: EJB modules which contains enterprise java beans class

How to iterate HashMap in Java ?

October 21, 2017 youvcode

public static void printMap(Map mp) { Iterator it = mp.entrySet().iterator(); while (it.hasNext()) { Map.Entry pair = (Map.Entry) it.next(); System.out.println(pair.getKey() + ” = ” +

Why List = new ArrayList() ? in Java

October 21, 2017 youvcode

The main reason you’d do this is to decouple your code from a specific implementation of the interface. When you write your code like this:

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