how to setup jdk in ubuntu

//how to install jdk in ubuntu

install the bin package of netbeans

//how to set classpath of jdk

open /etc/profile

write

JAVA_HOME="/opt/jdk1.6.0_01"

PATH=$JAVA_HOME/bin:$PATH

export PATH JAVA_HOME

//how to set mysqlconnector of netbeans

start netbeans

open tools->libraries

new library

add jar/folder

give the jar location of mysql-connector.jar

add it

start new project

open projects

open libraries

add library

add jar

//how to install mysqlconnector.jar

install the deb package of libmysql-java_5.0.4+dfsg-2_all.deb

it resides in /usr/share/java/mysql-connector-java-5.0.4.jar

//how to run database related jar file in terminal

java -cp path of mysqlconnector -jar jar file