Example usage for java.net URLClassLoader loadClass

Introduction

In this page you can find the example usage for java.net URLClassLoader loadClass.

Prototype

public final Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException 

Source Link

Usage

From source file:MainClass.java

public static void main(String args[]) {
    String name = "http://urlWithClassName";
    try {/*  ww  w . j a  va 2  s.  c  om*/
        if (!name.endsWith(".class")) {
            System.err.println("That doesn't look like a byte code file!");
            return;
        }
        URL u = new URL(name);
        URLClassLoader ucl = new URLClassLoader(u);

        // parse out the name of the class from the URL
        String s = u.getFile();
        String classname = s.substring(s.lastIndexOf('/'), s.lastIndexOf(".class"));
        Class AppletClass = ucl.loadClass(classname, true);
        Applet apl = (Applet) AppletClass.newInstance();
        JFrame f = new JFrame();
        f.setSize(200, 200);
        f.add("Center", apl);
        apl.init();
        apl.start();
        f.setVisible(true);
    } catch (Exception e) {
        System.err.println(e);
    }
}

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