How to put apostrophes in a query

Hi,
We use JDK1.2.2 with Oracle 8. We are using JDBC with the Oracle Driver installed.
We have a list of companies in our database, some of which have an apostrophe in them. However, if someone types a company name containing an apostrophe on a company search webpage i get the error
java.sql.SQLException: ORA-00911: invalid character
So how would i query the database for a name which contains an apostrophe. The apostrophe in the database is written as ' and not any special characters etc.
What do i do?

This is nothing to do with java.
Invalid SQL
select * from atable where name='someone's'
The apostrophe is considered closing single quote, and last part (s') becomes invalid
Valid SQL
select * from atable where name='someone''s'
double apostrophes can be used within the single quote
select * from atable where name="someone's"
single apostrophe can be used within the double quote

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