How to get list of all class names in a package

hi,
how can i get all the names of classes in a specified package, for example, if i want to get all names of
classes in package java.util through java application.

hi,
if u read my question with open eyes , i wrote " with java application" not with java API .

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Better way how to get list of all classpath URLs in runtime

Hello everyone,
How to get list of all classpath items (URLs) in runtime from Java code?
I am aware of solution based on System.getProperty("java.class.path"). Is there any alternative?
This solution has several drawbacks. You have to parse String output. And I not sure if it contains ALL resources (JARs, class directories) loaded by ClassLoader or just reflects -cp arguments.
Does system property "java.class.path" contain ALL loaded JARs?
Does it contain items (JARs, class directories) loaded by bootstrap classpath?
What about JARs loaded in runtime?
Is the separator ":" always same on all operation systems?
I was looking for some Java API based solution, method like List<URL> getAllClasspathItems()
But there is nothing like this in ClassLoader, Class, Runtime or System classes.
For curious, here is code I use.
String classpath = System.getProperty("java.class.path");
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while (st.hasMoreElements()) {
System.out.println(st.nextElement());
}

For curious, here are output prints for all 3 methods:
1) parsing system property
2) tschodt
3) overcast SystemClassLoader to URLClassLoader
/home/espinosa/workspace/jboss_embedded_test1/target/test-classes
/home/espinosa/workspace/jboss_embedded_test1/target/classes
/opt/javalibs/javax/ejb/ejb-api/3.0/ejb-api-3.0.jar
/opt/javalibs/javax/jms/jms/1.1/jms-1.1.jar
/opt/javalibs/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar
package com.sun.org.apache.xerces.internal.impl.validation, Java Platform API Specification, version 1.6
package com.thoughtworks.qdox.directorywalker
package com.sun.org.apache.xerces.internal.parsers, Java Platform API Specification, version 1.6
package java.util.jar, Java Platform API Specification, version 1.6
package org.testng.internal.thread
package com.sun.org.apache.xerces.internal.util, Java Platform API Specification, version 1.6
package java.net, Java Platform API Specification, version 1.6
package sun.reflect.misc, Java Platform API Specification, version 1.6
package esp.ejb.samples1.test
package sun.security.provider, Java Platform API Specification, version 1.
file:/home/espinosa/workspace/jboss_embedded_test1/target/test-classes/
file:/home/espinosa/workspace/jboss_embedded_test1/target/classes/
file:/opt/javalibs/javax/ejb/ejb-api/3.0/ejb-api-3.0.jar
file:/opt/javalibs/javax/jms/jms/1.1/jms-1.1.jar
file:/opt/javalibs/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar
...Interestingly, method 1 and 3 gives the same list, same order, same count, just format of item is a little bit different. The order is same as in Eclipse .classpath file.
Method 2 (tschodt) give significantly more items! rougly 3x! Different order (somewhat random it seems to me). Some items contain extra information, like version and string "Java Platform API Specification".
It prints not absolute paths but logical Java names.

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How to view list of all system exceptions from standard package?
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Krishna

Just for fun:
SQL> conn sys/****** as sysdba
Verbonden.
SQL> select cast(trim(substr(text,instr(text,'(')+1,instr(text,',')-instr(text,'(')-1)) as varchar2(30)) exception_name
2       , to_number(replace(substr(text,instr(text,',')+1,instr(text,')')-instr(text,',')-1),'''')) error_number
3    from user_source
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5     and type = 'PACKAGE'
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8 /
EXCEPTION_NAME                 ERROR_NUMBER
ACCESS_INTO_NULL                      -6530
CASE_NOT_FOUND                        -6592
COLLECTION_IS_NULL                    -6531
CURSOR_ALREADY_OPEN                   -6511
DUP_VAL_ON_INDEX                         -1
INVALID_CURSOR                        -1001
INVALID_NUMBER                        -1722
INVALID_OBJECT_NAME                  -44002
INVALID_QUALIFIED_SQL_NAME           -44004
INVALID_SCHEMA_NAME                  -44001
INVALID_SQL_NAME                     -44003
LOGIN_DENIED                          -1017
NO_DATA_FOUND                           100
NO_DATA_NEEDED                        -6548
NOT_LOGGED_ON                         -1012
PROGRAM_ERROR                         -6501
ROWTYPE_MISMATCH                      -6504
SELF_IS_NULL                         -30625
STORAGE_ERROR                         -6500
SUBSCRIPT_BEYOND_COUNT                -6533
SUBSCRIPT_OUTSIDE_LIMIT               -6532
TIMEOUT_ON_RESOURCE                     -51
TOO_MANY_ROWS                         -1422
USERENV_COMMITSCN_ERROR               -1725
VALUE_ERROR                           -6502
ZERO_DIVIDE                           -1476
26 rijen zijn geselecteerd.Regards,
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How can one get a list of all JSF beans?
To get a particular JSF bean one does
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Several ways:
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http://itrob.be/sharepoint-get-all-lists-names-in-javascript-spservice-and-jquery/
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On the menubar, Mail > Window > Previous Recipients
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How to get list of all class names in a package

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