GetAuthenticatorTest.java 文件源码

public static void main (String args[]) throws Exception {
    Authenticator defaultAuth = Authenticator.getDefault();
    if (defaultAuth != null) {
        throw new RuntimeException("Unexpected authenticator: null expected");
    }
    MyAuthenticator auth = new MyAuthenticator();
    Authenticator.setDefault(auth);
    defaultAuth = Authenticator.getDefault();
    if (defaultAuth != auth) {
        throw new RuntimeException("Unexpected authenticator: auth expected");
    }
    System.setSecurityManager(new SecurityManager());
    try {
        defaultAuth = Authenticator.getDefault();
        throw new RuntimeException("Expected security exception not raised");
    } catch (AccessControlException s) {
        System.out.println("Got expected exception: " + s);
        if (!s.getPermission().equals(new NetPermission("requestPasswordAuthentication"))) {
            throw new RuntimeException("Unexpected permission check: " + s.getPermission());
        }
    }
    System.out.println("Test passed with default authenticator "
                       + defaultAuth);
}