Java

Java: Heap Size

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Ergonomics: Estimated Ergonomics algorithm Initial heap size = 16384/64 = 256M Maximum heap size = 16384/4 = 4096M   Windows java -XX:+PrintFlagsFinal -version | findstr /i "HeapSize PermSize ThreadStackSize"   Ubuntu java -XX:+PrintFlagsFinal -version | grep -iE 'HeapSize|PermSize|ThreadStackSize'

Java

Jupyter: Install

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https://www.digitalocean.com/community/tutorials/how-to-set-up-jupyter-notebook-with-python-3-on-ubuntu-18-04   Not access from browser. http://127.0.0.1:8888/?token=6935ee9bb9c26ed8a89cd0c0953dff411d0eba559234529f

Java

Java: CLI and Apache using diferent versions

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I have a Talend Job (which runs in Java), and I'm able to successfully run it on the CLI, but I made a Script to run it directly from the web and got the following error: Exception in thread "main" java.lang.UnsupportedClassVersionError: malla_new_2019_10_21/crm_email_builder_0_1/CRM_Email_Builder : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:808) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at […]

Java

Java: Revert from JAVA 1.8 to 1.7 Windows 10

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Uninstall Java from Control Panel -> Programs -> Uninstall Need to remove three files from /Windows/System32 and C:\ProgramData\Oracle\Java\javapath (you need to view hidden files to see Program Data) This files are  "java", "javaw" and "javaws" After you do this you should reboot and then install the java version you want (in this example java 1.7) […]

iDempiere

Jasper Reports: JAVA Compatibility

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We user Jasper Reports on multiple projects: We have a stand-alone Jasper Server that runs all types of reports from our server We have an Openbravo ERP Instance¬† We have an iDempiere ERP Instance Running (same fork root as Openbravo). The Jasper Studio is used to configure the reports and compile them, the problem is […]