Java JAR Archives and classpath
The JVM class loader will only find and use JAR archives that are listed in the classpath. There are several ways to add a JAR to the classpath:
- Copy the JAR to one of the directories listed in the CLASSPATH environment variable. To see the current value of the CLASSPATH environment variable, open a MS-DOS prompt and type:
echo %CLASSPATH%Another way of viewing the classpath is to run this Java code:
String classpath = System.getProperty("java.class.path");
- Modify the CLASSPATH environment variable to also include the directory containing the JAR archive. This is typically done via the Windows Computer-->Properties-->Advanced dialog. For more information, these Google searches produce good results: "windows 7 environment variables", "windows xp environment variables", etc.
- Set the classpath at runtime. There are several possible ways of doing this:
- Use the -classpath option:
javac -classpath ".;C:/chilkatJava/chilkat.jar" Test.java
java -classpath ".;C:/chilkatJava/chilkat.jar" Test
- Use the -Djava.class.path system property:
javac -Djava.class.path=.;C:/chilkatJava/chilkat.jar Test.java
java -Djava.class.path=.;C:/chilkatJava/chilkat.jar Test
- Use the CLASSPATH environment variable
IMPORTANT:On Windows systems, the semicolon character should be used for the path separator. However, on Linux systems, the colon character should be used.
Statement. Copyright 2000-2017 Chilkat
Software, Inc. All rights reserved.
(Regarding the usage of the Android logo) Portions of this page are reproduced from work created and shared by Google and used according to terms described in the Creative Commons
3.0 Attribution License.
Send feedback to firstname.lastname@example.org
Software components and libraries for Linux, MAC OS X, iOS, Android™, Solaris, RHEL/CentOS, FreeBSD, MinGW
Azure, Windows 10, Windows 8, Windows Server 2012, Windows 7, Vista, XP, 2003 Server, 2008 Server, etc.