pq_recvbuf: recv() failed: Connection reset by peer

Hello!

I have a problem with a connection between java and postgresql:

I always get the error message: pq_recvbuf: recv() failed: Connection reset
by peer

Here is my java-code:

public void open() throws Exception {
try {
Class.forName( "org.postgresql.Driver" );
con = DriverManager.getConnection
("jdbc:postgresql:ticketline", "Beant", "masterkey");
}
catch(ClassNotFoundException e) {
System.err.println("Failed to load Driver");
System.exit(1);
}
catch(SQLException e) {
System.err.println("Sql-State "+e.getSQLState());
System.err.println("ErrorCode: "+ e.getErrorCode());
e.printStackTrace();
}

I have updated my classpath and postmaster is running with -i. Here are
also the last lines of the pg_hba.conf:

local all trust
host all 10.1.52.61 255.255.255.0 trust
host all 127.0.0.1 255.255.255.255 trust

I have tried to change these settings, but i didnt get a connection

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