How to get the path of running java program [duplicate]
Is there a way to get the path of main class of the running java program.
structure is
D:/
|---Project
|------bin
|------src
I want to get the path as D:\Project\bin\
.
I tried System.getProperty("java.class.path");
but the problem is, if I run like
java -classpath D:\Project\bin;D:\Project\src\ Main
Output
Getting : D:\Project\bin;D:\Project\src\
Want : D:\Project\bin
Is there any way to do this?
===== EDIT =====
Got the solution here
Solution 1 (By Jon Skeet)
package foo;
public class Test
{
public static void main(String[] args)
{
ClassLoader loader = Test.class.getClassLoader();
System.out.println(loader.getResource("foo/Test.class"));
}
}
This printed out:
file:/C:/Users/Jon/Test/foo/Test.class
Solution 2 (By Erickson)
URL main = Main.class.getResource("Main.class");
if (!"file".equalsIgnoreCase(main.getProtocol()))
throw new IllegalStateException("Main class is not stored in a file.");
File path = new File(main.getPath());
Note that most class files are assembled into JAR files so this won't work in every case (hence the IllegalStateException
). However, you can locate the JAR that contains the class with this technique, and you can get the content of the class file by substituting a call to getResourceAsStream()
in place of getResource()
, and that will work whether the class is on the file system or in a JAR.
Use
System.getProperty("java.class.path")
see http://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html
You can also split it into it's elements easily
String classpath = System.getProperty("java.class.path");
String[] classpathEntries = classpath.split(File.pathSeparator);
Try this code:
final File f = new File(MyClass.class.getProtectionDomain().getCodeSource().getLocation().getPath());
replace 'MyClass
' with your class containing the main method.
Alternatively you can also use
System.getProperty("java.class.path")
Above mentioned System property provides
Path used to find directories and JAR archives containing class files. Elements of the class path are separated by a platform-specific character specified in the path.separator property.
You actually do not want to get the path to your main class. According to your example you want to get the current working directory, i.e. directory where your program started. In this case you can just say new File(".").getAbsolutePath()
ClassLoader cl = ClassLoader.getSystemClassLoader();
URL[] urls = ((URLClassLoader)cl).getURLs();
for(URL url: urls){
System.out.println(url.getFile());
}