org.postgresql.util.PSQLException: FATAL: password authentication failed for user "myuser"

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Protocol error. Session setup failed.
org.postgresql.util.PSQLException: FATAL: password authentication failed for user "myuser"	at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:408)	at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:181)	at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:64)	at org.postgresql.jdbc2.AbstractJdbc2Connection.(AbstractJdbc2Connection.java:144)	at org.postgresql.jdbc3.AbstractJdbc3Connection.(AbstractJdbc3Connection.java:29)	at org.postgresql.jdbc3g.AbstractJdbc3gConnection.(AbstractJdbc3gConnection.java:21)	at org.postgresql.jdbc4.AbstractJdbc4Connection.(AbstractJdbc4Connection.java:31)	at org.postgresql.jdbc4.Jdbc4Connection.(Jdbc4Connection.java:24)	at org.postgresql.Driver.makeConnection(Driver.java:410)	at org.postgresql.Driver.connect(Driver.java:280)	at java.sql.DriverManager.getConnection(DriverManager.java:664)	at java.sql.DriverManager.getConnection(DriverManager.java:247)	at database_tests.DBTests.main(DBTests.java:43)