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how to test error

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Isee You
Isee You 2012-3-4
this error hapens when i save data to my data base(mysql) i want to a code to test this error .if it happens i can do any ting like "msg" or any thing so the program run without any error shows on command window
the error is
Error using com.mysql.jdbc.JDBC4PreparedStatement/executeBatch
Java exception occurred:
java.sql.BatchUpdateException: Duplicate entry '1-56' for key
'PRIMARY'
at
com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2020)
at
com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1451)

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Honglei Chen
Honglei Chen 2012-3-5

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