2011/05/28 レッツゴーデベロッパー2011@仙台

1. Java

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Java

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6. Java

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12. // Hello.java
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}

13. // Hello.groovy
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}

14. // Hello.groovy
println "Hello, World!"

17. class Dog {
void cry() { println "Bowwow!" }
}
class Cat {
void cry() { println "Meow!" }
}
void kick(obj) { obj.cry() }
kick(new Dog())
kick(new Cat())

18. String.metaClass.shout =
{ println delegate.toUpperCase() + "!" }
"Let’s go developers".shout()

20. url = "http://dist.groovy.codehaus.org/
distributions/groovy-binary-1.8.0.zip"
tmpfile = File.createTempFile("ant", ".zip")
ant = new AntBuilder()
ant.get(src:url, dest:tmpfile)
ant.unzip(src:tmpfile, dest:".")

21. @Grab('org.twitter4j:twitter4j-core:[2.2,)')
import twitter4j.*
twitter = new TwitterFactory().instance
twitter.updateStatus " #5000dai"

24. Java