June 2016 – Everything is code

Java SSH Client

Author Recommendations June 29, 2016

http://www.yegor256.com/2014/09/02/java-ssh-client.html

String hello = new Shell.Plain(
  new SSH(
    "ssh.example.com", 22,
    "yegor", "-----BEGIN RSA PRIVATE KEY-----..."
  )
).exec("echo 'Hello, world!'");

Java console program + Maven

Author Maven June 29, 2016

Use “Assembler Plugin”:

http://www.mojohaus.org/appassembler/appassembler-maven-plugin/usage-program.html

How it looks:

$ mvn package appassembler:assemble
...
$ sh target/appassembler/bin/app
Hello World!

Java 8 optional trick

Author Java 8 June 13, 2016

following

optional.isPresent() ? optional.get().getSet() : Collections.emptySet();

could be refactored to

optional.map(e -> e.getSet()).orElse(Collections.emptySet());