"DELETE FROM content WHERE uid='$id'"/**
* аннотация @Data добавит в байткод методы
* getString, setString,
* getAnotherString, setAnotherString,
* equals, hashcode, toString
*/
@Data
public class App {
private String string;
private String anotherString;
}
Ctrl+B == все что нужно для глубокого понимания внутренней структуры. 
sudo update-ca-certificates -fClearing symlinks in /etc/ssl/certs...
done.
Updating certificates in /etc/ssl/certs...
WARNING: Skipping duplicate certificate Go_Daddy_Class_2_CA.pem
WARNING: Skipping duplicate certificate Go_Daddy_Class_2_CA.pem
173 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...
org.debian.security.InvalidKeystorePasswordException: Cannot open Java keystore. Is the password correct?
at org.debian.security.KeyStoreHandler.load(KeyStoreHandler.java:68)
at org.debian.security.KeyStoreHandler.<init>(KeyStoreHandler.java:52)
at org.debian.security.UpdateCertificates.<init>(UpdateCertificates.java:65)
at org.debian.security.UpdateCertificates.main(UpdateCertificates.java:51)
Caused by: java.io.IOException: Invalid keystore format
at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:650)
at sun.security.provider.JavaKeyStore$JKS.engineLoad(JavaKeyStore.java:55)
at java.security.KeyStore.load(KeyStore.java:1226)
at org.debian.security.KeyStoreHandler.load(KeyStoreHandler.java:66)
... 3 more
E: /etc/ca-certificates/update.d/jks-keystore exited with code 1.
done.sudo dpkg --purge --force-depends ca-certificates-java
sudo apt-get install ca-certificates-java
