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  <TITLE>Writing Advanced Applications, Appendix C: Security Manager Methods</TITLE>
  <META NAME="AUTHOR" CONTENT="Monica Pawlan and Calvin Austin">
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  <H2>Writing Advanced Applications<BR>
  <FONT SIZE="3">Appendix C: Security Manager Methods</FONT></H2>
  
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<P>
This table shows which permissions are checked for by the
default implementations of the <CODE>java.lang.SecurityManager</CODE>
methods. Each of the <CODE>check</CODE> methods calls the
<CODE>SecurityManager.checkPermission</CODE> method with the indicated
permission, except for the <CODE>checkConnect</CODE> and <CODE>checkRead</CODE>
methods that take a context argument.
The <CODE>checkConnect</CODE> and <CODE>checkRead</CODE>
methods expect the context to be an <CODE>AccessControlContext</CODE>
and they call the context's <CODE>checkPermission</CODE> method
with the specified permission.

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<PRE>
public void checkAccept(String host, int port);
java.net.SocketPermission "{host}:{port}", "accept";

public void checkAccess(Thread g);
java.lang.RuntimePermission "modifyThread");

public void checkAccess(ThreadGroup g);
java.lang.RuntimePermission "modifyThreadGroup");

public void checkAwtEventQueueAccess();
java.awt.AWTPermission "accessEventQueue";

public void checkConnect(String host, int port);
if (port == -1) 
  java.net.SocketPermission "{host}","resolve"; 
else 
  java.net.SocketPermission "{host}:{port}","connect";

public void checkConnect(String host, int port, 
                         Object context);
if (port == -1) 
  java.net.SocketPermission "{host}","resolve"; 
else  
  java.net.SocketPermission "{host}:{port}","connect";

public void checkCreateClassLoader();
java.lang.RuntimePermission "createClassLoader";

public void checkDelete(String file);
java.io.FilePermission "{file}", "delete";

public void checkExec(String cmd);
if (cmd is an absolute path) 
  java.io.FilePermission "{cmd}", "execute";
else 
  java.io.FilePermission "-", "execute";

public void checkExit(int status);
java.lang.RuntimePermission "exitVM");

public void checkLink(String lib);
java.lang.RuntimePermission "loadLibrary.{lib}";

public void checkListen(int port);
if (port == 0)
  java.net.SocketPermission "localhost:1024-","listen";
else
  java.net.SocketPermission "localhost:{port}","listen";

public void checkMemberAccess(Class clazz, int which);
if (which != Member.PUBLIC) {
 if (currentClassLoader() != clazz.getClassLoader()) {
  checkPermission(
   new java.lang.RuntimePermission(
                    "accessDeclaredMembers"));
 }
}

public void checkMulticast(InetAddress maddr);
java.net.SocketPermission(
              maddr.getHostAddress(),"accept,connect");

public void checkMulticast(InetAddress maddr, byte ttl);
java.net.SocketPermission(
              maddr.getHostAddress(),"accept,connect");

public void checkPackageAccess(String pkg);
java.lang.RuntimePermission 
                  "accessClassInPackage.{pkg}";

public void checkPackageDefinition(String pkg);
java.lang.RuntimePermission 
                  "defineClassInPackage.{pkg}";

public void checkPrintJobAccess();
java.lang.RuntimePermission "queuePrintJob";

public void checkPropertiesAccess();
java.util.PropertyPermission "*", "read,write";

public void checkPropertyAccess(String key);
java.util.PropertyPermission "{key}", "read,write";

public void checkRead(FileDescriptor fd);
java.lang.RuntimePermission "readFileDescriptor";

public void checkRead(String file);
java.io.FilePermission "{file}", "read";

public void checkRead(String file, Object context);
java.io.FilePermission "{file}", "read";

public void checkSecurityAccess(String action);
java.security.SecurityPermission "{action}";

public void checkSetFactory();
java.lang.RuntimePermission "setFactory";

public void checkSystemClipboardAccess();
java.awt.AWTPermission "accessClipboard";

public boolean checkTopLevelWindow(Object window);
java.awt.AWTPermission "showWindowWithoutWarningBanner";

public void checkWrite(FileDescriptor fd);
java.lang.RuntimePermission "writeFileDescriptor";

public void checkWrite(String file);
java.io.FilePermission "{file}", "write";

public SecurityManager();
java.lang.RuntimePermission "createSecurityManager";

</PRE>
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