1. 單行String
單引號是普通字符串, 雙引號是GString
def hw = 'hello, world'
println 'hello, world'
println 'groovy say "Hello, world!"'
println "groovy say ${hw}" 2. 多行String
def blogAddr = 'http://www.aygfsteel.com/waterye'
println """\
Water Ye's blog:
${blogAddr}
"""
3. 使用range獲取substring
println hw[hw.length()-1..0] 不用羨慕python,ruby了
4. 增加的api, 參考gdk
http://groovy.codehaus.org/groovy-jdk.html