Groovy笔记(4)_字符串处理

字符串处理一

• println 'clat said "escaflone"'
• println "clat said'escaflone'"  // 影号中的影号，大中放小，小中放大都可以，类似js

def str1 ="Groovy&Grails&clat"

• println str1[4]                        //v,同getAt(4)
• println str1[-1]                       //t
• println str1[1..2]                    //ro
• println str1[1..<3]                  //ro
• prinltn str1[4..2]                    //voo
• prinltn str1[4,1,6]                  //vr&
• println str1 == 'Groovy&Grails&clat' // true

字符串处理二

• println 'clat'<=>'clat'            //0
• println 'clat'<=>'clat005'      //-1
• println 'clat'<=>'Clat'           //1
• println 'clat'.compareTo('Clat') //32
• println 'Groovy' + '&Grails' + '&clat'
• println 'Groovy'*3                //GroovyGroovyGroovy
• prinltn str1.length()             //18
• println str1-'&clat'                  //Groovy&Grails

字符串处理三

• println "Groovy".compareToIgnoreCase("groovy")    //0
• prinltn "Groovy".concat("&Grails")                             //Groovy&Grails
• prinlnt "Groovy".endsWith("ovy")                              //true
• println "Groovy".equalsIgnoreCase("groovy")          //true
• println "Groovy".indexOf('oo')                                   //2
• println "Groovy".substring(2)                                    //oovy
• println "Groovy".substring(2,4)                                 // oo

字符串处理四

def str2 = "Groovy"

• println "[${str2.center(11)}]"      //[  Groovy   ]
• println "[${str2.center(3)}]"        //[Groovy] 3<字符串长度，原大小输出
• println "[${str2.center(11,'=')}]" //[==Groovy===]
• println "${str2.contains('Gr')}"    //true
• println "${str2.count('o')}"          //2
• println str2.leftShift(' world')         // Groovy world
• println str2<<' world'                    // Groovy world

字符串处理五

• println str2.minus('vy')                 //Groo
• println str2 - 'vy'                           //Groo
• println str2.next()                        //Groovz ++运算符
• println str2.previous()                  //Groovx  --运算符
• println "[${str2.padLeft(4)}]"      //[Groovy]
• println "[${str2.padLeft(11)}]"    //[     Groovy]
• println "[${str2.padLeft(11,'#')}]"//[#####Groovy]
• padRight()类似

字符串处理六

def str3 = "clat"

• str3.replaceAll("[a-z]"){ch -> ch.toUpperCase()}  //CLAT
• str3.reverse()                                                         //talc
• str3.size()                                                               //4
• str3.toCharacter()                                                   //c
• "123".toDouble()                                                    // 123.0   类似还有toFloat()/toInteger()/toLong()
• str3.toList()                                                             //["c","l","a","t"]

字符串处理七

def str4="Groovy&Grails&clat"

• str4.tokenize()      //["Groovy&Grails&clat"] 无空格
• str4.tokenzie('&')  //["Groovy","Grails","clat"]

def str5="Groovy Grails clat"

• str5.tokenize()      //["Groovy","Grails","clat"]
• str5.tokenize().getClass().getName()   //java.util.ArrayList

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