CSV Comparator / Tickets / #2 Command line give NullPointerException in compareCSVWriteResult

Martin Le Brun - 2017-11-13

FYI, the below gives the same error, so it seems not to be due to the file or other config parameters.

java -jar ./CSVComparator/CSVComparatorCLI_java8.jar -config.loglevel.console=OFF -config.loglevel.file=OFF

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xresch - 2017-11-13

Hi Martin,

this is thrown by the following line in the code:
//-------------------------------------
// Compare if both file exists and are readable
//-------------------------------------
if(new File(olderFile).canRead() && new File(youngerFile).canRead()){

Just to be sure that everything is okay with the paths, can you try to copy the .jar and the files you want to compare all in the same directory and try it again?

Cheers
xresch

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- Martin Le Brun - 2017-11-14
  
  Hi xresch
  
  Both files are readable from the same bash command line as the utility:
  
  ~ > if [[ -r ./temp/comparenew/CompFile.tab ]] ; then echo "File is
  readable"; else "file is not readable"; fi;
  File is readable
  ~ > if [[ -r ./temp/compareold/CompFile.tab ]] ; then echo "File is
  readable"; else "file is not readable"; fi;
  File is readable
  
  Martin.
  
  On Mon, Nov 13, 2017 at 5:09 PM, xresch xresch@users.sf.net wrote:
  
  Hi Martin,
  
  this is thrown by the following line in the code:
  //-------------------------------------
  // Compare if both file exists and are readable
  //-------------------------------------
  if(new File(olderFile).canRead() && new File(youngerFile).canRead()){
  
  Just to be sure that everything is okay with the paths, can you try to
  copy the .jar and the files you want to compare all in the same directory
  and try it again?
  
  Cheers
  xresch
  
  [tickets:#2] https://sourceforge.net/p/csvcomparator/tickets/2/
  Command line give NullPointerException in compareCSVWriteResult*
  
  Status: open
  Milestone: 1.0
  Created: Mon Nov 13, 2017 05:19 PM UTC by Martin Le Brun
  Last Updated: Mon Nov 13, 2017 05:50 PM UTC
  Owner: nobody
  
  When I run the command line utility from Linux (with any argument) I get a
  null pointer exception. I get the same if I use a command file as well.
  
  ~ > java -jar ./CSVComparator/CSVComparatorCLI_java8.jar
  -config.loglevel.console=ALL -config.loglevel.file=OFF
  –older.file=./temp/compareold/CompFile.tab -older.delimiter=','
  -older.label=old –younger.file=./temp/comparenew/CompFile.tab
  -younger.delimiter=',' -younger.label=new -column.identifier=ID,ID
  -result.file=./temp/compareout.txt -result.delimiter=';'
  -result.comparediff=false -result.comparediff%=false
  -result.comparestring=true
  Exception in thread "main" java.lang.reflect.InvocationTargetException
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(
  NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(
  DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:497)
  at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.
  main(JarRsrcLoader.java:58)
  Caused by: java.lang.NullPointerException
  at java.io.File.<init>(File.java:277)
  at com.csvapi.compare.CSVAPICompare.compareCSVWriteResult(
  CSVAPICompare.java:48)
  at com.csvcomparator.cli.main.CSVComparatorCLI.main(
  CSVComparatorCLI.java:55)
  ... 5 more
  ~ > ll ./temp/comparenew/CompFile.tab
  -rwxr-xr-x 1 nobody nobody 84 Nov 11 22:03 ./temp/comparenew/CompFile.tab
  ~ > ll ./temp/compareold/CompFile.tab
  -rwxr-xr-x 1 nobody nobody 94 Nov 11 22:04 ./temp/compareold/CompFile.tab
  ~ > ll ./temp/compareout.txt
  -rw-r--r-- 1 nobody nobody 0 Nov 11 22:48 ./temp/compareout.txt</init>
  
  ~ > ll csvapi.log
  -rw-r--r-- 1 nobody nobody 0 Nov 12 10:04 csvapi.log
  
  java -version
  java version "1.8.0_45"
  Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
  Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
  
  ~/temp > echo $JAVA_HOME
  /usr/lib/jvm/java-1.8.0-oracle-1.8.0.45-1jpp.2.el7_1.x86_64/jre
  
  I have tried three different versions of Java 8 with the same result. Any
  ideas? Thanks!
  
  Sent from sourceforge.net because you indicated interest in
  https://sourceforge.net/p/csvcomparator/tickets/2/
  
  To unsubscribe from further messages, please visit
  https://sourceforge.net/auth/subscriptions/
  
  Related
  
  Tickets: #2
  
  alternate
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
  - Martin Le Brun - 2017-11-14
    
    I also ran a basic java program and it can read the file too
    
    ~ > java Test
    canRead ./temp/comparenew/CompFile.tab
    ID,Data 1,Data 2
    1,ABC,123
    2,DEF,456
    3,HIJ,789
    4,KJM,012
    7,RST,678
    5,OPQ,345
    8,UVW,910
    
    See attached for the program
    
    On Mon, Nov 13, 2017 at 7:05 PM, Martin Le Brun martinlebrun3141@gmail.com
    wrote:
    
    Hi xresch
    
    Both files are readable from the same bash command line as the utility:
    
    ~ > if [[ -r ./temp/comparenew/CompFile.tab ]] ; then echo "File is
    readable"; else "file is not readable"; fi;
    File is readable
    ~ > if [[ -r ./temp/compareold/CompFile.tab ]] ; then echo "File is
    readable"; else "file is not readable"; fi;
    File is readable
    
    Martin.
    
    On Mon, Nov 13, 2017 at 5:09 PM, xresch xresch@users.sf.net wrote:
    
    Hi Martin,
    
    this is thrown by the following line in the code:
    //-------------------------------------
    // Compare if both file exists and are readable
    //-------------------------------------
    if(new File(olderFile).canRead() && new File(youngerFile).canRead()){
    
    Just to be sure that everything is okay with the paths, can you try to
    copy the .jar and the files you want to compare all in the same directory
    and try it again?
    
    Cheers
    xresch
    
    [tickets:#2] https://sourceforge.net/p/csvcomparator/tickets/2/
    Command line give NullPointerException in compareCSVWriteResult*
    
    Status: open
    Milestone: 1.0
    Created: Mon Nov 13, 2017 05:19 PM UTC by Martin Le Brun
    Last Updated: Mon Nov 13, 2017 05:50 PM UTC
    Owner: nobody
    
    When I run the command line utility from Linux (with any argument) I get
    a null pointer exception. I get the same if I use a command file as well.
    
    ~ > java -jar ./CSVComparator/CSVComparatorCLI_java8.jar
    -config.loglevel.console=ALL -config.loglevel.file=OFF
    –older.file=./temp/compareold/CompFile.tab -older.delimiter=','
    -older.label=old –younger.file=./temp/comparenew/CompFile.tab
    -younger.delimiter=',' -younger.label=new -column.identifier=ID,ID
    -result.file=./temp/compareout.txt -result.delimiter=';'
    -result.comparediff=false -result.comparediff%=false
    -result.comparestring=true
    Exception in thread "main" java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce
    ssorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
    thodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(
    JarRsrcLoader.java:58)
    Caused by: java.lang.NullPointerException
    at java.io.File.<init>(File.java:277)
    at com.csvapi.compare.CSVAPICompare.compareCSVWriteResult(CSVAP
    ICompare.java:48)
    at com.csvcomparator.cli.main.CSVComparatorCLI.main(CSVComparat
    orCLI.java:55)
    ... 5 more
    ~ > ll ./temp/comparenew/CompFile.tab
    -rwxr-xr-x 1 nobody nobody 84 Nov 11 22:03 ./temp/comparenew/CompFile.tab
    ~ > ll ./temp/compareold/CompFile.tab
    -rwxr-xr-x 1 nobody nobody 94 Nov 11 22:04 ./temp/compareold/CompFile.tab
    ~ > ll ./temp/compareout.txt
    -rw-r--r-- 1 nobody nobody 0 Nov 11 22:48 ./temp/compareout.txt</init>
    
    ~ > ll csvapi.log
    -rw-r--r-- 1 nobody nobody 0 Nov 12 10:04 csvapi.log
    
    java -version
    java version "1.8.0_45"
    Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
    Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
    
    ~/temp > echo $JAVA_HOME
    /usr/lib/jvm/java-1.8.0-oracle-1.8.0.45-1jpp.2.el7_1.x86_64/jre
    
    I have tried three different versions of Java 8 with the same result. Any
    ideas? Thanks!
    
    Sent from sourceforge.net because you indicated interest in
    https://sourceforge.net/p/csvcomparator/tickets/2/
    
    To unsubscribe from further messages, please visit
    https://sourceforge.net/auth/subscriptions/
    
    Related
    
    Tickets: #2
    
    Test.java
    
    alternate
    
    If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
    - Martin Le Brun - 2017-11-14
      
      I can reproduce the exception with
      
      import java.io.*;
      
      public class Test {
      public static void main(String [] args) {
      
      // The name of the file to open. String olderFile = null; if (new File(olderFile).canRead()) { System.out.println("canRead " + olderFile); } else { System.out.println("canNotRead " + olderFile); } }
      
      }
      
      ~ > javac Test.java && java Test
      Exception in thread "main" java.lang.NullPointerException
      at java.io.File.<init>(File.java:277)
      at Test.main(Test.java:9)</init>
      
      Have I got the names of the attributes correct - and the format of their
      values?
      –younger.file=./temp/comparenew/CompFile.tab
      –older.file=./temp/compareold/CompFile.tab
      
      (The same error occurs if I put the attributes into a configuration file)
      
      Thanks again for your help,
      
      Martin
      
      On Mon, Nov 13, 2017 at 7:29 PM, Martin Le Brun martinlebrun3141@gmail.com
      wrote:
      
      I also ran a basic java program and it can read the file too
      
      ~ > java Test
      canRead ./temp/comparenew/CompFile.tab
      ID,Data 1,Data 2
      1,ABC,123
      2,DEF,456
      3,HIJ,789
      4,KJM,012
      7,RST,678
      5,OPQ,345
      8,UVW,910
      
      See attached for the program
      
      On Mon, Nov 13, 2017 at 7:05 PM, Martin Le Brun martinlebrun3141@gmail.com wrote:
      
      Hi xresch
      
      Both files are readable from the same bash command line as the utility:
      
      ~ > if [[ -r ./temp/comparenew/CompFile.tab ]] ; then echo "File is
      readable"; else "file is not readable"; fi;
      File is readable
      ~ > if [[ -r ./temp/compareold/CompFile.tab ]] ; then echo "File is
      readable"; else "file is not readable"; fi;
      File is readable
      
      Martin.
      
      On Mon, Nov 13, 2017 at 5:09 PM, xresch xresch@users.sf.net wrote:
      
      Hi Martin,
      
      this is thrown by the following line in the code:
      //-------------------------------------
      // Compare if both file exists and are readable
      //-------------------------------------
      if(new File(olderFile).canRead() && new File(youngerFile).canRead()){
      
      Just to be sure that everything is okay with the paths, can you try to
      copy the .jar and the files you want to compare all in the same directory
      and try it again?
      
      Cheers
      xresch
      
      [tickets:#2] https://sourceforge.net/p/csvcomparator/tickets/2/
      Command line give NullPointerException in compareCSVWriteResult*
      
      Status: open
      Milestone: 1.0
      Created: Mon Nov 13, 2017 05:19 PM UTC by Martin Le Brun
      Last Updated: Mon Nov 13, 2017 05:50 PM UTC
      Owner: nobody
      
      When I run the command line utility from Linux (with any argument) I get
      a null pointer exception. I get the same if I use a command file as well.
      
      ~ > java -jar ./CSVComparator/CSVComparatorCLI_java8.jar
      -config.loglevel.console=ALL -config.loglevel.file=OFF
      –older.file=./temp/compareold/CompFile.tab -older.delimiter=','
      -older.label=old –younger.file=./temp/comparenew/CompFile.tab
      -younger.delimiter=',' -younger.label=new -column.identifier=ID,ID
      -result.file=./temp/compareout.txt -result.delimiter=';'
      -result.comparediff=false -result.comparediff%=false
      -result.comparestring=true
      Exception in thread "main" java.lang.reflect.InvocationTargetException
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce
      ssorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
      thodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(J
      arRsrcLoader.java:58)
      Caused by: java.lang.NullPointerException
      at java.io.File.<init>(File.java:277)
      at com.csvapi.compare.CSVAPICompare.compareCSVWriteResult(CSVAP
      ICompare.java:48)
      at com.csvcomparator.cli.main.CSVComparatorCLI.main(CSVComparat
      orCLI.java:55)
      ... 5 more
      ~ > ll ./temp/comparenew/CompFile.tab
      -rwxr-xr-x 1 nobody nobody 84 Nov 11 22:03 ./temp/comparenew/CompFile.tab
      ~ > ll ./temp/compareold/CompFile.tab
      -rwxr-xr-x 1 nobody nobody 94 Nov 11 22:04 ./temp/compareold/CompFile.tab
      ~ > ll ./temp/compareout.txt
      -rw-r--r-- 1 nobody nobody 0 Nov 11 22:48 ./temp/compareout.txt</init>
      
      ~ > ll csvapi.log
      -rw-r--r-- 1 nobody nobody 0 Nov 12 10:04 csvapi.log
      
      java -version
      java version "1.8.0_45"
      Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
      Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
      
      ~/temp > echo $JAVA_HOME
      /usr/lib/jvm/java-1.8.0-oracle-1.8.0.45-1jpp.2.el7_1.x86_64/jre
      
      I have tried three different versions of Java 8 with the same result.
      Any ideas? Thanks!
      
      Sent from sourceforge.net because you indicated interest in
      https://sourceforge.net/p/csvcomparator/tickets/2/
      
      To unsubscribe from further messages, please visit
      https://sourceforge.net/auth/subscriptions/
      
      Related
      
      Tickets: #2
      
      alternate
      
      If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

xresch - 2017-11-25

Hi Martin,

I was not able to reproduce this issue, also when I googled for the exception message / stacktrace this seems to be something that happens from time to time for a unknown reason(most probably some various environmental factors.)
I saw your 4 star review(thanks for the first review =) ) and it seems you got what you need through the GUI, so I wil close this defect.

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xresch - 2017-11-25

status: open --> closed
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- Martin Le Brun - 2017-11-27
  
  Thank you for looking at this, xresh. I tend to agree that is is probably
  some environmental issue. I will try other environments and configurations,
  and will let you know if I figure anything out that would help make your
  utility even better.
  
  Regards,
  
  Martin Le Brun.
  
  On Sat, Nov 25, 2017 at 3:59 AM, xresch xresch@users.sf.net wrote:
  
  status: open --> closed
  
  [tickets:#2] https://sourceforge.net/p/csvcomparator/tickets/2/
  Command line give NullPointerException in compareCSVWriteResult*
  
  Status: closed
  Milestone: 1.0
  Created: Mon Nov 13, 2017 05:19 PM UTC by Martin Le Brun
  Last Updated: Sat Nov 25, 2017 08:59 AM UTC
  Owner: nobody
  
  When I run the command line utility from Linux (with any argument) I get a
  null pointer exception. I get the same if I use a command file as well.
  
  ~ > java -jar ./CSVComparator/CSVComparatorCLI_java8.jar
  -config.loglevel.console=ALL -config.loglevel.file=OFF
  –older.file=./temp/compareold/CompFile.tab -older.delimiter=','
  -older.label=old –younger.file=./temp/comparenew/CompFile.tab
  -younger.delimiter=',' -younger.label=new -column.identifier=ID,ID
  -result.file=./temp/compareout.txt -result.delimiter=';'
  -result.comparediff=false -result.comparediff%=false
  -result.comparestring=true
  Exception in thread "main" java.lang.reflect.InvocationTargetException
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(
  NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(
  DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:497)
  at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.
  main(JarRsrcLoader.java:58)
  Caused by: java.lang.NullPointerException
  at java.io.File.<init>(File.java:277)
  at com.csvapi.compare.CSVAPICompare.compareCSVWriteResult(
  CSVAPICompare.java:48)
  at com.csvcomparator.cli.main.CSVComparatorCLI.main(
  CSVComparatorCLI.java:55)
  ... 5 more
  ~ > ll ./temp/comparenew/CompFile.tab
  -rwxr-xr-x 1 nobody nobody 84 Nov 11 22:03 ./temp/comparenew/CompFile.tab
  ~ > ll ./temp/compareold/CompFile.tab
  -rwxr-xr-x 1 nobody nobody 94 Nov 11 22:04 ./temp/compareold/CompFile.tab
  ~ > ll ./temp/compareout.txt
  -rw-r--r-- 1 nobody nobody 0 Nov 11 22:48 ./temp/compareout.txt</init>
  
  ~ > ll csvapi.log
  -rw-r--r-- 1 nobody nobody 0 Nov 12 10:04 csvapi.log
  
  java -version
  java version "1.8.0_45"
  Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
  Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
  
  ~/temp > echo $JAVA_HOME
  /usr/lib/jvm/java-1.8.0-oracle-1.8.0.45-1jpp.2.el7_1.x86_64/jre
  
  I have tried three different versions of Java 8 with the same result. Any
  ideas? Thanks!
  
  Sent from sourceforge.net because you indicated interest in
  https://sourceforge.net/p/csvcomparator/tickets/2/
  
  To unsubscribe from further messages, please visit
  https://sourceforge.net/auth/subscriptions/
  
  Related
  
  Tickets: #2
  
  alternate
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Command line give NullPointerException in compareCSVWriteResult

CSV Comparator is a tool for comparing files which contain CSV-Data.

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#2 Command line give NullPointerException in compareCSVWriteResult

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