How can I convert a String array into an int array in java? I am reading a stream of integer characters into a String array from the console, with BufferedReader br = new BufferedReader (new InputStreamReader(System.in)); for(c=0;c<str.length;c++) str[c] = br.readLine(); where str[] is String typed. I want to compare the str[] ...
In analyzing Java GC behavior, some tools has the metric "garbage collection rate" (an example would be in figure 19. from http://www.ibm.com/developerworks/java/library/j-ibmtools2/#fig19) of which the unit is MB/sec. It's a rarely metric compared to others, like GC utilization. It looks like representing how fast GC cleans up. But doe...
I am successfully marshaling a POJO into JSON using JAX-RS and JAXB annotations. The problem is that when I am trying to use the same for un-marshalling my request it doesn’t work. As far as I can see in the documentation JAX-RS can automatically marshal and unmarshal application/json strings back to java classes. Do I need to create m...
I'm trying to run a sample program for hibernate shards. I'm all done with it but whenever I run the test program I get an Exception javax.naming.NoInitialContextException: Need to specify class name in environment or system property After googling I got to know that I've to set the JNDI properties. I did like this Hashtable env = ...
I need to make a number of distinct objects of a class at runtime. This number is also determined at runtime. Something like if we get int no_o_objects=10 at runtime. Then I need to instantiate a class for 10 times. Thanks ...
Hi All, Can I overload the Java Timer Task to have it execute every one day? Timer timer = new Timer(true); timer.schedule(new SendEmailTask(), 6000000, 86400000); //schedule to run one day? Will there be no problem if I implement below period? ...
Hi, Before going on, see this question Its JSF form is shown again as follows <f:view> <h:form> <div> <label>Id</label> <input type="text" name="accountId"/> </div> <div> <label>Amount</label> <input type="text" name="amount"/> </div> <h:comman...
I want to run my all test cases which is written in both junit versions(3.x & 4.x) in JSP. if i called that jsp it should run all test cases. pls guide me. thanks for advance. ...
I have made three classes classA, classB and classC in the same package. Now I make three objects of classA inside classB and two objects of classA inside classC. Now how can i get following things inside classA. 1) How many objects of classA has been used by classB and classC ? 2) How can i get the name & reference of the objects of cl...
I have a model that has an array of Strings called tags, public class Model { private String tags[]; ... } How do I make a query that looks at if the array tags contains a certain string say if a certain model's tag attribute looks like this tags[] = {"Java","Programming"} I want to make a query in JDO that's gets all Mode...
I want to create a pdf according to Incoming Value From Mysql DB using Struts.Could Anyone help me by point any tool or how to process? ...
how can i replace hardcoded number with variable in this java statement which is accessing the mysql datatabase using jdbc. the query is executed using executeQuery(query) here is the java statement String query = "select * from TableA where num = '1233' "; i need to replace this 1233 with a variable in this statement. any help app...
Is it possible to get the name of the panel that a JLabel is added to? I added some JLabels to different JPanels, and I want to call different mouse events according to which panel the jLabels are placed upon. ...
Hi, currently Im working on a portion on this research paper "modeling by example" Have tonnes of problems now.So if anyone has knowledge on this paper, help is badly needed here. I am using java opengl for the programming. first of is that I am trying to draw a stroke. eg: 5*100 pixels stroke. How do I draw that using the mouse.Curre...
Hello, I'm developing a Flex application with BlazeDS and I'm experiencing memory leak when using java to query from MySQL in hibernate. Can anyone tell me how to deal with this memory leak? It seems that each time query is invoke java.exe takes more memory. Thanks Sample of my java factory = Persistence.createEntityManagerFactory(PE...
which java data type would be able to store the numerical value 9999999999 ? ...
is this good style of java data access code, or is it too much try finally ? public List<Item> getItems() throws ItemException { ArrayList<Item> items = new ArrayList<Item>(); try { Connection con = ds.getConnection(); try { PreparedStatement pStmt = con.prepareStatement("SELECT ...
If I have a basic accessor method that returns an ArrayList What exactly would i test for it? I am very inexperienced when it comes to testing. ...
I have one array int a[] = {1,2,3}; int b[] = {1,2}; how will I find the odd element in array ...
hi, I'd like to get an email when an error or exception happen in my web application, so that i can do the fix quickly.I've set a JSP error page. I like to show the error page to the client and at the same time get an email. I use jsp and a corresponding servlet and controller for each jsp. How can i call the servlet to send email whe...