Classpath of JAVA Post: 302755071

Sponsored Content

Top Forums Programming Classpath of JAVA Post 302755071 by yifangt on Friday 11th of January 2013 05:50:37 PM

01-11-2013

Registered User

Classpath of JAVA

Hello,
ABC question as I could not get a direct answer: How to locate the default IO class of JAVA? My question was triggered by the row in most java program

Code:

import java.io.*

as I am very curious where the io class is located in my Mint14 (Ubuntu12.10). I am aware it is similar to use DBI in PERL, or #include <stream> in C++, where I could locate the packages/libraries in certain directories:

Code:

/usr/lib/perl5/DBI.pm
/usr/include/c++/4.7/iostream

but I could not locate any file name (io.class, or io.jre) for this io class in java? Have checked my system for the libraries:

Code:

/usr/lib/jvm/java-7-openjdk-amd64/lib/
/usr/lib/jvm/java-7-openjdk-common/jre/lib/
/home/kevin/downloadsoftware/jre1.7.0_10/lib/
/usr/lib/eclipse/plugins/

Also checked Oracle website, where there is:

Code:

package java.io

but I could not find this file in my system, and the java program works fine. Can anybody give me some explanantion about the "default IO, file, string, date & time, etc classes" of java1.7.x when it was installed. My java is:

Code:

$java -version
java version "1.7.0_09"
OpenJDK Runtime Environment (IcedTea7 2.3.3) (7u9-2.3.3-0ubuntu1~12.10.1)
OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)

Thanks a lot!

yifangt

View Public Profile for yifangt

Find all posts by yifangt

10 More Discussions You Might Find Interesting

1. Programming

exit status running java classpath in unix shell

I have a java classpath running inside of a unix shell script. During my testing it will error with lines that show an example like this below. java.io.FileNotFoundException error at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.<init>(FileInputStream.java:129), ...

2. UNIX for Dummies Questions & Answers

Classpath

This question is realted to UNIX and Java. I sing in to a UNIX server and I want to change my CLASSPATH locally, so it won't affect any other users CLASSPATHS. Is the command 'export PATH=...' the way to do it? Thanks. Duplicate post

3. Programming

Classpath

4. Programming

regarding classpath java

Hi, I have a below command.... $JAVA_HOME/bin/java -cp "/usr/orabase/product/10.2.0/lib:/usr/java/javajar/common/sched.jar:/usr/orabase/product/10.2.0/jdbc/lib/ojdbc14_g.jar:/usr/orabase/product/10.2.0/jdbc/lib/classes12.jar" com.abrt.smart.Smart I want to know where the Smart.class is...

5. Web Development

Servlet CLASSPATH for Apache

Hi All, I'm trying to play around with Java Servlets. I have a apache web server running on Solaris. And I'm trying to understand which file I add the JAVA CLASSPATH too so that when apache starts up it will have access to mysql interface libraries etc. Could some one please tell me? ...

6. Ubuntu

Trouble setting up Java classpath

Saw an error while setting up an application called i2phex: # ./run.sh java.lang.RuntimeException: Failed to initialize phex.net.repres.i2p.I2PPresentationManager at phex.common.ManagerController.initializeManagers(ManagerController.java:78) at phex.Main.main(Main.java:161)After...

7. Shell Programming and Scripting

How to override Classpath?

Hi, When I login to my HP-UX and fire the "set" command I see that the weblogic 9.2 classpath is already set. However, I wish to override the classpath to weblogic version 10.3 I have a script call setWLSEnv.sh that has the desired classpath. Thus, in my unix script i write ....

8. UNIX for Advanced & Expert Users

Fedora java classpath

What is the proper way to set your java classpath?

9. Red Hat

Process not running: /opt/java15/jdk/bin/java -classpath /opt/apache/apache-ant-1.7.0-mod/lib/ant-la

Have no idea on what the below error message is: Process not running: /opt/java15/jdk/bin/java -classpath /opt/apache/apache-ant-1.7.0-mod/lib/ant-launcher.jar org.apache.tools.ant.launch.Launcher -buildfile build.xml dist. Any help?

10. Homework & Coursework Questions

Java doesn�t find the CLASSPATH (System variable)

1. The problem statement, all variables and given/known data: As a excercise I have to compile a program (Hello2.java) with a class file (HelloText.java) in another directory. (As you seen in the screenshot) I�m setting a PATH and a CLASSPATH (system variables). It�s working without a...

LEARN ABOUT CENTOS

grub-render-label

GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full  documentation  for grub-render-label is maintained as a Texinfo manual.  If the info and grub-render-label programs are properly
       installed at your site, the command

              info grub-render-label

       should give you access to the complete manual.

grub-render-label (GRUB) 2.02-2ubuntu8.3                             July 2018                                                GRUB-RENDER-LABEL(1)

10 More Discussions You Might Find Interesting

1. Programming

exit status running java classpath in unix shell

Discussion started by: mmcds

2. UNIX for Dummies Questions & Answers

Classpath

Discussion started by: Rachel Ross

3. Programming

Classpath

Discussion started by: Rachel Ross

4. Programming

regarding classpath java

Discussion started by: PRKS

5. Web Development

Servlet CLASSPATH for Apache

Discussion started by: fishman2001

6. Ubuntu

Trouble setting up Java classpath

Discussion started by: Israel213

7. Shell Programming and Scripting

How to override Classpath?

Discussion started by: mohtashims

8. UNIX for Advanced & Expert Users

Fedora java classpath

Discussion started by: cokedude

9. Red Hat

Process not running: /opt/java15/jdk/bin/java -classpath /opt/apache/apache-ant-1.7.0-mod/lib/ant-la

Discussion started by: gull05

10. Homework & Coursework Questions

Java doesn�t find the CLASSPATH (System variable)

Discussion started by: MenschTown

LEARN ABOUT CENTOS

grub-render-label