CODEWITHSUNDEEP
javagroovy
jane
jane

Reputation: 241

create map in groovy

I have the below file : 

name = David 
city = sydney
COuntry = Australia

I am trying to create a hash map using groovy and split it at = and store it in an array such that part[0] contains before equal and part[1] contains after equal. I am then trying to create a map here .

Desired output :

def mapedData = [name :david , city : sydney , country :australia ]

My try :

String s=""
def myfile = new File("C:/Users/.............")
BufferedReader br = new BufferedReader(new FileReader(myfile));

Map<String, String> map = new HashMap<String, String>();
while((s = br.readLine()) != null) {
    if(!s.startsWith("#")) {
        StringTokenizer st=new StringTokenizer(s, "=")
            while(st.hasMoreElements()) {
                String line=st.nextElement().toString().trim()
                print line
            }
        }
    }
}

Upvotes: 2

Views: 6644

Answers (3)

Vampire
Vampire

Reputation: 38734

Here a one-liner that does what you want:

new File(/C:\Users\.............\input.txt/).readLines().collectEntries { it.trim().split(/\s*=\s*/) as List }

Upvotes: 0

Bhanuchander Udhayakumar
Bhanuchander Udhayakumar

Reputation: 1646

Try with this code:

def map =[:]
new File("file.txt").eachLine{line->
if(line.contains('=')&& (!line.startsWith("#"))){        
    map[line.split('=')[0]]=line.split('=')[1]
    }
}
println map

Upvotes: 1

gil.fernandes
gil.fernandes

Reputation: 14621

If you want to create a map from a file in Groovy, you can use java.util.Properties for that. Here is an example:

def file = new File("C:\\stackoverflow\\props.properties")
def props = new Properties()
file.withInputStream { stream ->
    props.load(stream)
}
println(props)

This prints out:

[key1:value1, key2:value2]

The props.properties file contains this:

# Stackoverflow test
key1 = value1
key2 = value2

Upvotes: 4

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