Our application built with C# and SOLR search.

One of my requirement to implement partial updates with SOLR.I am getting an error while posting JSON data into SOLR server.

Error Response from SOLR API:

{
    "responseHeader": {
        "status": 400,
        "QTime": 30
    },
    "error": {
        "metadata": [
            "error-class",
            "org.apache.solr.common.SolrException",
            "root-error-class",
            "org.apache.solr.common.SolrException"
        ],
        "msg": "Atomic document updates are not supported unless <updateLog/> is configured",
        "code": 400
    }
}

Select all Open in new window

Would anyone wish to comment on the algorithm here, which finds the GCDs of two numbers? (I'm not asking about number format exceptions etc., just the math and algo elements).

import java.util.*;

class Euclid {


int m;
int n;
int commonDivisor;


    public static void main(String[] args){
    
    
            Scanner scanner  = new Scanner(System.in);
            
            System.out.println();
            System.out.print("Number for higher figure > ");
            Integer higher = new Integer(scanner.nextInt());
            
            System.out.print("Number for lower figure > ");
            Integer lower = new Integer(scanner.nextInt());
            System.out.println();
                   
            Euclid euclid = new Euclid();
            euclid.n = lower.intValue();
            euclid.m = higher.intValue();
            euclid.commonDivisor = euclid.findLargestCommonDivisor(euclid.m, euclid.n);
            
            if(euclid.commonDivisor == -1){System.out.println("These numbers, (or, at least, the higher of the two is), or are, prime. They have no (greatest) common divisor.");}
            else{System.out.println("The largest number that divides both "+euclid.m+" and "+euclid.n+" "+"is . . . . "+euclid.commonDivisor);}

    }
    
    
    private int findLargestCommonDivisor(int m, int n){
    
        int n1 = 0;
        int nPrev = 0;
        
        
        if(m % n == 0){
        
            return n;
            
        }
        

Select all Open in new window

…

Hi Team,

I need an help in compiling my java program. I do not have admin writes to set the path variable in my system to point to JDK installed directory.
I need to compile my Employee.java file in D:\JavaProject folder. My JDK is installed in the c:\Program Files\Java\JDK1_8\bin

From D:\JavaProject folder I need to run  javac command
javac Employee.java

Iam getting the below error
unrecognised command  for javac

is there a way to compile the code without having to set the path variable  and mention the JDK path in javac command. Its very urgent

javac  <path of JDK> Employee.java

For sending requests to a webservice that deserializes Json, what items in this list are 'required' by the webservice?

HTTPMethod:  
SSLTimeout:  
SSLApplicationID:
SSLCertStore:
SSLCertStorePassword:
SSLVerifyPeer:  
SSLVerifyHost:  
HTTPVersion:
# BasicAuthUser:
# BasicAuthPassword:
# ProxyURI:
# ProxyUser:
# ProxyPassword:
# SendHTTPHeaders:
# HeaderCookieData:
# ResponseCookieFile:
# HeaderSOAPAction:
# HeaderUserAgent:
# HeaderAccept:
# HeaderHost:
# HeaderReferer:
# HeaderConnection:
# HeaderContentType:
# CustomHeaderName(1): Authorization
# CustomHeaderValue(1):
# InputCcsid: 0
# OutputCcsid: 0
# EnableExpectHeader:  
# LocalInterface:
# Enable IPv6:

Hi Experts,

could you suggest the best way to convert custom application text log file to json format please

Read the whole file and convert line by line to json on a windows server.

Since application generate log in its custom location, may be I should read this directory for each file > convert each line to json object, place it in a different location. Also we should not duplicate or read the same line again :)

Also is it possible to apply similiar logic to windows events log.

please advice

I am currently learning Java.

I would like to create a class that contains a constant variable (it should not be changed by anyone) that is structured in a similar way (I will use JSON to show an example):

{
	"key_1": "value_1",
	"key_2": "value_2",
	"object_1": {
		"object_1_key_1": "object_1_value_1",
		"object_1_key_2": "object_1_value_2",
		"object_1_key_2": "object_1_value_3",  
	}
}

Select all Open in new window

What would be the best Java data structure to obtain such result?

I thought a HashMap could've been a good start but then if I use:
private HashMap<String, String> myHash;

I am then forced to just use strings...

Can you please suggest a solution?

Thanks for your time and patience.

I study a Java code and what the meaning of  "<T extends Shape> void printValidColors()" ?  Why does the data type appear as "<T extends Shape> " ?  For calling this method, do I always need to provide the format like "ShapeDriver.<Rectangle>printValidColors();" ?

    
public class ShapeDriver {

    public static void main(String args[]) {
        System.out.println("Valid Shape colors:-");
        ShapeDriver.<Shape>printValidColors();
        System.out.println();

        System.out.println("Valid Rectangle colors:-");
        ShapeDriver.<Rectangle>printValidColors();
        System.out.println();

        System.out.println("Valid Circle colors:-");
        ShapeDriver.<Circle>printValidColors();
        System.out.println();

private static <T extends Shape> void printValidColors() {
        final int nthWrapEvery = 5;
        for (int i = 0; i < T.getNumOfValidColors(); i++) {
            System.out.print(T.getValidColor(i) + " ");
            if ((i + 1) % nthWrapEvery == 0) {
                System.out.println();
            }
        }
    }

Select all Open in new window

vec = new Vector<String>(fArr.length); // Vector<String> vec declared earlier.
    
                        
            for(File fi : fArr){vec.add(fi.getName());}
            
            for(Object s : vec.toArray()){System.out.println((String)s);} // this prints the filenames to the console
            
            System.out.println("Files length is  "+fArr.length);// prints whatever length the array is
            System.out.print("vec is "); 
            System.out.println(vec==null); // prints TRUE !!

Select all Open in new window

All,

I'm trying to read and output the contents of a file called credentials.txt. The code is below and attached is the error I'm getting.

package testingrandommethods;
import java.util.Scanner;
import java.io.*;

public class TestingRandomMethods {

   
    public static void main(String[] args) throws IOException {    //I had an error until I added "throws IOException" when trying to open the file.
         
        FileInputStream fileByteStream = null;
        Scanner credFile = null;
        String credData = "";

        //Attempt to open file
        fileByteStream = new FileInputStream("credentials.txt");
        credFile = new Scanner(fileByteStream); //credFile now contains what's in credentials.txt.
        System.out.println("Reading and printing data.");
        credData = credFile.next(); //credData now contains what's in credentials.txt as well. It allows me to read through the file.
       
        while (credData.charAt(0)){
            System.out.println(credData);
           
            credData = credFile.next();
        }
        System.out.println(credData);
       
        //Close the file
        System.out.println("Closing the credential.txt file.");
        fileByteStream.close();
        return;
    }
   
}
ErrorMessage.png

Hi,

I have a java app, which acts as an oracle client/bridge between a mobile app ( data visualisation) and oracle database. The java app is capable to multithread if more than one request is made at a time.
No issues here, all works fine. The aim was to refrain from plugin mobile devices to the db.
Apart from the mobile app side, it's possible to run queries against the db on a scheduler i.e. every 5 mins and keep results in a buffer.

Anyway, In a production environment, my app was connected to a client database for a couple of weeks and suddenly the below error stopped the oracle form working causing a massive issue to the customer of mine.

ORA-01034: ORACLE not available ORA-27102: out of memory Linux-x86_64 Error: 12: Cannot allocate memory


Obviously, suspicion is that my product caused the Oracle problem. Apparently, oracle ran out of "accessible memory"  ( whatever that means - it wasn't techy guy who talked to me)

...so my question to you is if running queries against DB can cause any memory issues?

As far as I know, a bad sql ( there wasn't any in this case) can cause long-running queries/sessions, which can consume a lot of CPU and indeed can slow oracle down...

what's your view on this, please ?

Hello
Can someone help me out to set a format (###,##0.00) to JavaFx editable Double TableColumn.
Here is my code so far

....

	taux.setCellFactory(TextFieldTableCell.<CoursChange, Double>forTableColumn(new DoubleStringConverter()));
		taux.setOnEditCommit(event -> {
            TablePosition<CoursChange, Double> pos = event.getTablePosition();
            double newVal = event.getNewValue();
            int row = pos.getRow();
            CoursChange xcours = event.getTableView().getItems().get(row);
            xcours.setTaux(newVal);
            
            dataService.updateRecord(xcours.getId(), AppSettings.COMPANY_ID, newVal);
            
        });
...

Select all Open in new window

Thanks a lot

Hi Team ,
Below is the code Iam using running jdbc application , Iam new to Java . Iam not getting the excpected output


folder NAme : jdbcprograms
in this folder I have ojdbc6.jar and DBConnection.java file and class file.

import java.sql.*;

public class DBConnection
{
      public static void main(String [] args)
      {
            try
            {
      
                  Class.forName("jdbc.odbc.JdbcOdbcDriver");
                  Connection conn = DriverManager.getConnection("jdbc:odbc:Oracle-Hr","HR","orcl");
                  System.out.println(conn.getClass().getName());
            if (conn==null)
            {
                  System.out.println("Connection not established");
            }
            else
            {
                  System.out.println("Connection is  established");
            }
            }
            catch(SQLException e)
            {
                  System.out.println(e);            
            }
            catch(ClassNotFoundException e)      
            {
                  System.out.println(e);            
            }
            catch(Exception e)
            {
                  System.out.println(e);            
            }            
      }
}


When I run the code as below , I get the below output , but not getting the connection established output. Any help is really appreciated

D:\JdbcPrograms>java -jar ojdbc6.jar DBConnection
Oracle 11.2.0.1.0 JDBC 4.0 compiled with JDK6

Expected Output
Class Name Output for Connection Class
Connection established.

In selenium is it possible to know the type of the locator whether it is given in css or xpath or id or name or linktext etc..

the requirement is i get the locator in the form of a string and i have to know whether it is CSS or xpath

By selector = driver.findElement(By.cssSelector(locator));

if(selector == null){

  selector = driver.findElement(By.xpath(locator)); }

Select all Open in new window

as the very first statement throws an exception if it is a different locator, is there an easy way that we can identify the type and handle and type of locator