B4J Question [solved] Java 11 problem ?

derez · Dec 5, 2018

I try java11 on raspberry in order to see if the problems I get in linux are mine...
I installed the java 11 as explained above, bridge 1.42 and use 6.80 beta.
The application I try is using sqlite and RDC.
The server starts fine (until the line with JRDC is running) but when the client starts i get the following:

Waiting for debugger to connect...
Program started.
2018-12-05 14:18:17.784:INFO::main: Logging initialized @2743ms to org.eclipse.jetty.util.log.StdErrLog
Dec 05, 2018 2:18:18 PM com.mchange.v2.log.MLog
INFO: MLog clients using java 1.4+ standard logging.
Dec 05, 2018 2:18:20 PM com.mchange.v2.c3p0.C3P0Registry
INFO: Initializing c3p0-0.9.5.2 [built 08-December-2015 22:06:04 -0800; debug? true; trace: 10]
2018-12-05 14:18:30.200:INFOejs.Server:main: jetty-9.4.z-SNAPSHOT; built: 2018-05-03T15:56:21.710Z; git: daa59876e6f384329b122929e70a80934569428c; jvm 11-BellSoft+0
2018-12-05 14:18:30.620:INFOejs.session:main: DefaultSessionIdManager workerName=node0
2018-12-05 14:18:30.622:INFOejs.session:main: No SessionScavenger set, using defaults
2018-12-05 14:18:30.640:INFOejs.session:main: node0 Scavenging every 600000ms
2018-12-05 14:18:30.698:INFOejsh.ContextHandler:main: Started o.e.j.s.ServletContextHandler@134fff9{/,file:///home/pi/tempjars/www,AVAILABLE}
2018-12-05 14:18:30.719:INFOejs.AbstractNCSARequestLog:main: Opened /home/pi/tempjars/logs/b4j-2018_12_05.request.log
2018-12-05 14:18:30.827:INFOejs.AbstractConnector:main: Started ServerConnector@4a552{HTTP/1.1,[http/1.1]}{0.0.0.0:57665}
2018-12-05 14:18:30.832:INFOejs.Server:main: Started @15857ms
Emulated network latency: 100ms
jRDC is running (version = 2.1)
Dec 05, 2018 2:19:30 PM com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource
INFO: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 20000, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, contextClassLoaderSource -> caller, dataSourceName -> z8kfsx9zz1me0w1lp24y7|cddd20, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, extensions -> {}, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, forceSynchronousCheckins -> false, forceUseNamedDriverClass -> false, identityToken -> z8kfsx9zz1me0w1lp24y7|cddd20, idleConnectionTestPeriod -> 600, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost/recipe?characterEncoding=utf8, maxAdministrativeTaskTime -> 0, maxCo
nnectionAge -> 0, maxIdleTime -> 1800, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 150, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, preferredTestQuery -> null, privilegeSpawnedThreads -> false, properties -> {password=******, user=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> true, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ]
Dec 05, 2018 2:20:02 PM com.mchange.v2.resourcepool.BasicResourcePool
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@b183c8 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at jdk.internal.reflect.GeneratedConstructorAccessor7.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
at
com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2203)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2236)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2035)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:790)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at jdk.internal.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
at com.mchange.v2.c3p0.WrapperCo
nnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
at java.
base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
at java.base/java.net.Socket.connect(Socket.java:591)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)
... 20 more
Dec 05, 2018 2:20:02 PM com.mchange.v2.resourcepool.BasicResourcePool
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@1f7abf7 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at jdk.internal.reflect.GeneratedConstructorAccessor7.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
at
com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2203)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2236)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2035)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:790)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at jdk.internal.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
at com.mchange.v2.c3p0.WrapperC
onnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
at java
.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
at java.base/java.net.Socket.connect(Socket.java:591)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)
... 20 more
Dec 05, 2018 2:20:02 PM com.mchange.v2.resourcepool.BasicResourcePool
WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@6cc338 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
Dec 05, 2018 2:20:02 PM com.mchange.v2.resourcepool.BasicResourcePool
WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@6cc338 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
(TimeoutException) com.mchange.v2.resourcepool.TimeoutException: A client timed out while waiting to acquire a resource from com.mchange.v2.resourcepool.BasicResourcePool@6cc338 -- timeout at awaitAvailable()
Dec 05, 2018 2:20:03 PM com.mchange.v2.resourcepool.BasicResourcePool
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@129035c -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at jdk.internal.reflect.GeneratedConstructorAccessor7.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
at
com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2203)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2236)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2035)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:790)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at jdk.internal.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
at com.mchange.v2.c3p0.WrapperC
onnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
at java
.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
at java.base/java.net.Socket.connect(Socket.java:591)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)
... 20 more
Dec 05, 2018 2:20:03 PM com.mchange.v2.resourcepool.BasicResourcePool
WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@6cc338 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
Command: , took: 32982ms, client=10.100.102.1

The additionaljars are
[Code:]
'Non-UI application (console / server application)
#Region Project Attributes
#CommandLineArgs:
#MergeLibraries: True
#AdditionalJar: mysql-connector-java-5.1.41-bin
#AdditionalJar: sqlite-jdbc-3.7.2
[/Code:]
Edit: another application with just #AdditionalJar: sqlite-jdbc-3.7.2 works fine on raspberry and in linux.
The application works in windows.

Erel · Dec 5, 2018

Where is the MySQL server located? What is the jdbc url?

derez · Dec 5, 2018

The config file contains:

B4X:

#DATABASE CONFIGURATION
DriverClass=com.mysql.jdbc.Driver
JdbcUrl=jdbc:mysql://localhost/recipe?characterEncoding=utf8
User=root
Password=
#Java server port
ServerPort=48555

This is from the post about jrdc2:

Server configuration

1. Add the relevant JDBC jar file to the additional libraries folder.
2. Add a reference to this jar with:
Code:
#AdditionalJar: mysql-connector-java-5.1.27-bin

The Database is sqlite and is located in a directory RDB under objects.

keirS · Dec 5, 2018

derez said:
The config file contains:

B4X:

#DATABASE CONFIGURATION DriverClass=com.mysql.jdbc.Driver JdbcUrl=jdbc:mysql://localhost/recipe?characterEncoding=utf8 User=root Password= #Java server port ServerPort=48555

This is from the post about jrdc2:

The Database is sqlite and is located in a directory RDB under objects.

That doesn't make sense. You are trying to use a MySQL driver to connect to an SQLite DB. That's never going to fly.

derez · Dec 5, 2018

Maybe something is redundant, I don't really understand the RDC drivers but I managed to compile two DB programs that work in a (windows) server. I reverted to java 8 and still get these problem so I guess it has nothing to do with java 11.
Since the DB is sqlite, what should be the changes in the config file ?

DriverClass=com.mysql.jdbc.Driver
JdbcUrl=jdbc:mysql://localhost/recipe?characterEncoding=utf8

Erel · Dec 6, 2018

keirS is correct. You should only use a MySQL driver if you want to connect to a MySQL database server.

You need to use a SQLite driver. You can do it with the standard jRDC2 server or with this one which is customized for SQLite: https://www.b4x.com/android/forum/threads/modded-jrdc2-w-sqlite-support-and-more.85578/#content

derez · Dec 6, 2018

Thanks, I'll try that.

Edit: It is working, windows and Linux as well

B4J Question [solved] Java 11 problem ?

derez

Expert

Erel

B4X founder

derez

Expert

keirS

Well-Known Member

derez

Expert

Erel

B4X founder

derez

Expert

Similar Threads

B4J Question [solved] Java 11 problem ?

derez

Expert

Erel

B4X founder

derez

Expert

keirS

Well-Known Member

derez

Expert

Erel

B4X founder

derez

Expert

Similar Threads

Privacy & Transparency

Privacy & Transparency