Why does getResourceAsStream return null?

Why does getResourceAsStream return null?

The setting contains all extensions that should be interpreted as resources. If an extension does not comply to any pattern here, class. getResource will return null for resources using this extension.

What is getResourceAsStream in Java?

The getResourceAsStream() method of java. lang. Class class is used to get the resource with the specified resource of this class. The method returns the specified resource of this class in the form of InputStream object.

What is getClassLoader in Java?

getClassLoader() method returns the class loader for the class. Some implementations may use null to represent the bootstrap class loader. The method will return null in such implementations if this class was loaded by the bootstrap class loader.

What does getResourceAsStream return?

getResourceAsStream() method returns an input stream for reading the specified resource.

Do I need to close InputStreamReader?

It’s important to close any resource that you use. in. close will close BufferedReader, which in turn closes the resources that it itself uses ie. the InputStreamReader.

How do I read a jar file?

To access a file in a jar you have two options:

  1. Place the file in directory structure matching your package name (after extracting . jar file, it should be in the same directory as .
  2. Place the file at the root (after extracting . jar file, it should be in the root), then access it using Thread.

What is class forName in Java with example?

forName(String name, boolean initialize, ClassLoader loader) method returns the Class object associated with the class or interface with the given string name, using the given class loader. The specified class loader is used to load the class or interface.

Where is the classpath in Java?

Setting the Classpath in Java

  • Select Start -> Control Panel -> System -> Advanced -> Environment Variables -> System Variables -> CLASSPATH.
  • If the Classpath variable exists, prepend .;C:\introcs to the beginning of the CLASSPATH varible.
  • If the CLASSPATH variable does not exist, select New.
  • Click OK three times.

What is the difference between class getResource () and ClassLoader getResource ()?

getResource(“/…”) always returns null – the classloader doesn’t remove the leading / from the path, so the lookup always fails. Only getClass(). getResource() handles a starting / as an absolute path relative to the classpath.