java - Resource leak: workbook is never closed warning when using Apache.POI XSSFWorkbook -

-

so, using apache poi in order parse excel file database. initializing xssfworkbook follows:

xssfworkbook workbook = new xssfworkbook(fip);

then proceed method. workbook.close() not available method close workbook afterwards. ideas of how can let garbage collection take workbook after task finished?

i had issue, , making little sense. in end tracked issue down ide (netbeans) picking earlier version of poi libraries (v3.8) didn't have "close" method. check class path , duplicate imports of different versions of poi libraries.


Comments

Post a Comment

Popular posts from this blog

apache - setting document root in antoher partition on ubuntu -

-
i place apache document root inside partition of ubuntu hard drive, keep getting forbidden message, when place home directory woking find, how be? group or owner affected ? here mysite.conf , apache2.conf when place document root in home folder (working) #site-available/mysite.conf documentroot /home/jono/www #/etc/apache2/apache2.conf <directory /home/jono/www/> options indexes followsymlinks allowoverride none require granted </directory> bu when change document root partition keep getting forbidden messasge #site-available/mysite.conf documentroot /media/jono/website_data/www #/etc/apache2/apache2.conf <directory /media/jono/website_data/www/> options indexes followsymlinks allowoverride none require granted </directory> is owner/group access affected ? or there problem ? at last it's working, have grant access www:data accesing whole directory @mark-b, using chown -r www-data:www-data whole directory is...
Read more

cytoscape.js - How to add nodes to Dagre layout with Cytoscape -

-
i trying add nodes dagre graph through cityscape.js. problem nodes not painted. code have: cy.add({ group: "nodes", data: { id:"n0",name:"n0",weight: 75 }, }); $.ajax(url).done(function(jsontree){ var newnodes=[]; for(var i=1;i<6;i++){ //var child = jsontree.result[i]; newnodes.push( { group: "nodes", data: { id: "n"+i, name:"n"+i}}, { group: "edges", data: { id: "e"+i, source: "n0", target: "n"+i } } ); } cy.add(newnodes); any ideas? have used loaded function reload graph not work. not know if have use specific function reload graph. thank in advance. you need add positions new nodes. cytoscape.js docs : it important note positions of newly added nodes must defined when calling cy.add(). nodes can not placed in graph without valid position — otherwise not displayed. yo...
Read more

Process 'command 'F:\android-sdk\build-tools\21.1.2\aapt.exe'' finished with non-zero exit value 1 -

-
here content of build.gradle file: // top-level build file can add configuration options common sub-projects/modules. buildscript { repositories { maven { credentials { username artifactoryusername password artifactorypassword } url 'http://test:8081/artifactory/libs-release-local' } mavencentral() } dependencies { classpath 'com.android.tools.build:gradle:1.1.0' } allprojects { repositories { maven { credentials { username artifactoryusername password artifactorypassword } url 'http://test:8081/artifactory/libs-release-local' } mavencentral() maven { url 'http://repo1.maven.org/maven2' } jcenter() } } here content of app\build.gradle : apply plugin: 'com.android.application' android { compilesdkversion 21 buildtoolsversion "21.1.2" lintoptions { abortonerror false ...
Read more