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Groovy ネタ NGK 忘年会2009 ライトニングトーク

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Tsuyoshi Yamamoto
Tsuyoshi Yamamoto

The document shows an example Java class called HelloWorld that contains a greeting method to return the string "Hello" plus a name. It then demonstrates initializing an instance of the class, setting the name, and calling the greet method to print the greeting. The document also shows how this example is translated to use Groovy instead of Java.

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Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
JGGUG japan grails/groovy user group
Japan Grails Groovy Users Group
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
public class HelloWorld { String name; public void setName(String name){ this.name = name; } public String getName(){ return name; } public String greet(){ return "Hello "+name; } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld(); helloWorld.setName("Groovy"); System.out.println(helloWorld.greet()); } }
public class HelloWorld { String name; public void setName(String name){ this.name = name; } public String getName(){ return name; } public String greet(){ return "Hello "+name; } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld(); helloWorld.setName("Groovy"); System.out.println(helloWorld.greet()); } }
public class HelloWorld { String name public void setName(String name){ this.name = name } public String getName(){ return name } public String greet(){ return "Hello "+name } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld() helloWorld.setName("Groovy") System.out.println(helloWorld.greet()) } }
public class HelloWorld { String name public String greet(){ return "Hello "+name } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld() helloWorld.setName("Groovy") System.out.println(helloWorld.greet()) } }
public class HelloWorld { String name public String greet(){ return "Hello "+name } } HelloWorld helloWorld = new HelloWorld() helloWorld.setName("Groovy") System.out.println(helloWorld.greet())
class HelloWorld { String name def greet(){ return "Hello "+name } } def helloWorld = new HelloWorld() helloWorld.setName("Groovy") println(helloWorld.greet())
class HelloWorld { String name def greet(){ return "Hello "+name } } def helloWorld = new HelloWorld() helloWorld.name = "Groovy" println helloWorld.greet()
class HelloWorld { String name def greet(){ "Hello $name"} } def helloWorld = new HelloWorld() helloWorld.name = "Groovy" println helloWorld.greet()
class HelloWorld { String name def greet(){ "Hello $name"} } def helloWorld = new HelloWorld(name: "Groovy") println helloWorld.greet()
Groovy ネタ NGK 忘年会2009 ライトニングトーク
def arr = [1,2,3,'hoge'] def map = [a:1,b:2,c:'hoge']
@Grab('net.homeip.yusuke:twitter4j:[2.0,)') import twitter4j.* def user="username",pass="pass" new Twitter(user,pass).friendsTimeline.each { println "${it.user.name}: ${it.text}" } maven
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク
mailService.send to: 'foobar@gmail.com', subject: 'Hello World', htmlBody: '<bold>Hello</bold>'
import com.google.appengine.api.datastore.Entity def person = new Entity("person") person['name'] = " " person.age = 18 println person.name person.save() def q = new Query('person') def list = datastoreService.prepare(q).asList( Builder.withLimit(20).offset(0) ) person.delete()
Groovy ネタ NGK 忘年会2009 ライトニングトーク
Groovy ネタ NGK 忘年会2009 ライトニングトーク

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Groovy ネタ NGK 忘年会2009 ライトニングトーク

  • 7. public class HelloWorld { String name; public void setName(String name){ this.name = name; } public String getName(){ return name; } public String greet(){ return "Hello "+name; } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld(); helloWorld.setName("Groovy"); System.out.println(helloWorld.greet()); } }
  • 8. public class HelloWorld { String name; public void setName(String name){ this.name = name; } public String getName(){ return name; } public String greet(){ return "Hello "+name; } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld(); helloWorld.setName("Groovy"); System.out.println(helloWorld.greet()); } }
  • 9. public class HelloWorld { String name public void setName(String name){ this.name = name } public String getName(){ return name } public String greet(){ return "Hello "+name } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld() helloWorld.setName("Groovy") System.out.println(helloWorld.greet()) } }
  • 10. public class HelloWorld { String name public String greet(){ return "Hello "+name } public static void main(String[] args){ HelloWorld helloWorld = new HelloWorld() helloWorld.setName("Groovy") System.out.println(helloWorld.greet()) } }
  • 11. public class HelloWorld { String name public String greet(){ return "Hello "+name } } HelloWorld helloWorld = new HelloWorld() helloWorld.setName("Groovy") System.out.println(helloWorld.greet())
  • 12. class HelloWorld { String name def greet(){ return "Hello "+name } } def helloWorld = new HelloWorld() helloWorld.setName("Groovy") println(helloWorld.greet())
  • 13. class HelloWorld { String name def greet(){ return "Hello "+name } } def helloWorld = new HelloWorld() helloWorld.name = "Groovy" println helloWorld.greet()
  • 14. class HelloWorld { String name def greet(){ "Hello $name"} } def helloWorld = new HelloWorld() helloWorld.name = "Groovy" println helloWorld.greet()
  • 15. class HelloWorld { String name def greet(){ "Hello $name"} } def helloWorld = new HelloWorld(name: "Groovy") println helloWorld.greet()
  • 17. def arr = [1,2,3,'hoge'] def map = [a:1,b:2,c:'hoge']
  • 18. @Grab('net.homeip.yusuke:twitter4j:[2.0,)') import twitter4j.* def user="username",pass="pass" new Twitter(user,pass).friendsTimeline.each { println "${it.user.name}: ${it.text}" } maven
  • 25. mailService.send to: 'foobar@gmail.com', subject: 'Hello World', htmlBody: '<bold>Hello</bold>'
  • 26. import com.google.appengine.api.datastore.Entity def person = new Entity("person") person['name'] = " " person.age = 18 println person.name person.save() def q = new Query('person') def list = datastoreService.prepare(q).asList( Builder.withLimit(20).offset(0) ) person.delete()