Example usage for java.lang SecurityManager checkPackageDefinition

Introduction

In this page you can find the example usage for java.lang SecurityManager checkPackageDefinition.

Prototype

public void checkPackageDefinition(String pkg) 

Source Link

Document

Throws a SecurityException if the calling thread is not allowed to define classes in the specified package.

Usage

From source file:Main.java

public static void main(String[] args) {
    System.setProperty("java.security.policy", "file:/C:/java.policy");

    SecurityManager sm = new Main();

    System.setSecurityManager(sm);

    sm.checkPackageDefinition("java2s.com");

    System.out.println("Allowed!");
}

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From source file:com.sshtools.j2ssh.util.DynamicClassLoader.java

private boolean securityAllowsClass(String className) {
    try {//from  w  ww . j  av a  2 s .  co m
        SecurityManager security = System.getSecurityManager();

        if (security == null) {
            // if there's no security manager then all classes
            // are allowed to be loaded
            return true;
        }

        int lastDot = className.lastIndexOf('.');

        // Check if we are allowed to load the class' package
        security.checkPackageDefinition((lastDot > -1) ? className.substring(0, lastDot) : "");

        // Throws if not allowed
        return true;
    } catch (SecurityException e) {
        return false;
    }
}

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