java - NoClassDefFoundError: org/apache/commons/lang3/StringUtils

Question

I'm trying to run the sample project with this library and I get the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: 

    org/apache/commons/lang3/StringUtils

    at com.github.devnied.emvnfccard.enums.EmvCardScheme.<init>(EmvCardScheme.java:97)
    at com.github.devnied.emvnfccard.enums.EmvCardScheme.<clinit>(EmvCardScheme.java:32)
    at com.github.devnied.emvnfccard.parser.EmvParser.readWithAID(EmvParser.java:277)
    at com.github.devnied.emvnfccard.parser.EmvParser.readEmvCard(EmvParser.java:120)
    at com.github.devnied.emvpcsccard.Main.main(Main.java:64)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang3.StringUtils
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 5 more

I've added commons-lang-2.6.jar & commons-lang3-3.1-sources.jar in libs and classpath

Main class:

public static void main(final String[] args) throws CardException {
    Main pcsc = new Main();
    CardTerminal ct = pcsc.selectCardTerminal();
    Card c = null;
    if (ct != null) {
        c = pcsc.establishConnection(ct);
        CardChannel channel = c.getBasicChannel();
        PcscProvider provider = new PcscProvider(channel);
        EmvParser parser = new EmvParser(provider, false);
        parser.readEmvCard();
        c.disconnect(false);
    }
}

I have referred to the following links:

• java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils from BaseClassLoader

• Struts 2 framework demo

• http://apache-commons.680414.n4.nabble.com/lang-java-lang-NoClassDefFoundError-org-apache-commons-lang-StringUtils-Exception-td3735881.html

Answer 1

I have added commons-lang-2.6.jar & commons-lang3-3.1-sources.jar...

Here's your problem: commons-lang-2.6.jar doesn't contain the org.apache.commons.lang3 package, since that's part of version 3, and commons-lang3-3.1-sources.jar contains the source code, not the byte code.

You need to include commons-lang3-3.1.jar instead.