kri shan

Which cloud solution architect certification(Microsoft/AWS/Google) has more demand in the job market?

Where do I get the customer journey diagram/map templates (Using PowerPoint)?

Hi Doug, If we run the Java Concurrency code (Java Threads) continuously, it may ended up in dead lock situation. How to avoid deadlocks in this situation?

How to call abstract child class method in Parent abstract class ?


public abstract class A {   public void test() {     // getName()   } } public abstract class B extends A {  //  getName() - non-abstract method  public String getName() {     return "Bob";  } }

Tried this way too and it prints the employee object (not printing first name, last name and city values ).


    <c:forEach var="object" items="${employeeList}">        <tr>          <c:forEach var="field" items="${object['class'].declaredFields}">            <td><c:out value="${object[field.name]}"/></td>           </c:forEach>        </tr>      </c:forEach>

No start tag for  </c:forEach> line 7

Can i access the bean property within forEach ?


   <c:forEach var="employee" items="${employeeList}">        <tr>           <c:forEach var="result" items="${employee.children}">             <td><c:out value="${result.property}"/></td>           </c:forEach>        </tr>      </c:forEach>

employee list has List of Employee. Inner forEach loop is not printing the employee first name, employee last name and city in each iteration.


    <c:forEach var="employee" items="${employeeList}">        <tr>           <c:forEach var="result" items="${employee}">          [b]   <td><c:out value="${result}"/></td>[/b]           </c:forEach>        </tr>      </c:forEach>




public class Employee {            private String firstName;        private String lastName;        private String city;            public String getFirstName() {            return firstName;        }                public String setFirstName(String firstName) {                this.firstName = firstName;        }            public String getLastName() {            return lastName;        }                public String setLastName(String lastName) {                this.lastName = lastName;        }                        public String getCity() {            return lastName;        }                public String setCity(String city) {                this.city = city;        }        }

RegEx pattern for these Strings - one.two.three (or) onew.twos.trhhee.sdfour (or) fsdf.abcdr.trew.jffgh.qacd

This does not work  ((?:[a-z][a-z]+))

Whether Java.util.concurrent.CountDownLatch is the replacement of synchronized block ?

HelloWorld.getName() returns null.  new HelloWorld().getName() returns Tom.    How to  get name value using HelloWorld.getName() ?


public class HelloWorld {    public static HelloWorld instance = staticFactory();        private static String name = null;          public HelloWorld() {                name = "Tom";    }                 public static HelloWorld staticFactory() {               return new HelloWorld();     }                  public static HelloWorld getInstance() {        return instance;     }                 public static String getName() {           return name;     } } Public class Test {   System.out.println(HelloWorld.getName()); }

Can we store the table data in the cache using Query Cache for reducing the db access?

It shows variable name might not have been initialized with try/catch in the constructor and without try/catch is fine.  

public class Student {    private final String name;        public Student() {      [b]  try {         name = "Jim";        } catch(Exception e) {                    }[/b]    }        public void test() {        String person = name;    } }