This should be the first thing you should learn while writing Java programs because without the correct understanding of Classpath in Java you can't understand how Java locates your class files.Īlso don't confuse Classpath with PATH in Java, which is another environment variable used to find java binaries located in the JDK installation directory, also known as JAVA_HOME. Java CLASSPATH is one of the most important concepts in Java, but, I must say mostly overlooked. Most of these investment banks have written tests as part of their core Java interview questions and I always find at least one question related to CLASSPATH in Java on those interviews.
I have experience in the finance and insurance domain and Java is heavily used in this domain for writing sophisticated Equity, Fixed income trading applications. In this Java tutorial, we will learn What is Classpath in Java, how Java resolves classpath and how Classpath works in Java alongside How to set the classpath for Java in Windows and UNIX environment.
Classpath can be specified using CLASSPATH environment variable which is case insensitive, -cp or -classpath command-line option or Class-Path attribute in manifest.mf file inside the JAR file in Java. What is CLASSPATH in Java? Classpath in Java is the path to the directory or list of the directory which is used by ClassLoaders to find and load classes in the Java program.
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