Groovy startup failed unexpected token

groovy

Excuse me if this is a silly question, I'm a complete Groovy noob and I'm tearing my hair out.

Trying to run an example groovy script:

@Grab('com.xlson.groovycsv:groovycsv:1.0')
import static com.xlson.groovycsv.CsvParser.parseCsv

def csv = '''Name:Lastname
Mark:Andersson
Pete:Hansen'''

def data = parseCsv(csv, autoDetect:true)
for(line in data) {
    println "$line.Name $line.Lastname"
}

And getting the following error:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, /home/kmcghee/groovy/dev/import_csv/test: 2: unexpected token: import @ line 2, column 1.
   import static com.xlson.groovycsv.CsvParser.parseCsv

I've googled a lot on this and it appears to be related to Grapes but I can't pin down the issue. Any ideas?

Best Solution

Thanks for the comments. After noting the versions you guys are using I updated to the latest and it now works. 'apt-get install' gave me 1.8 and I hadn't checked. Schoolboy.

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Groovy executing shell commands

Ok, solved it myself;

def sout = new StringBuilder(), serr = new StringBuilder()
def proc = 'ls /badDir'.execute()
proc.consumeProcessOutput(sout, serr)
proc.waitForOrKill(1000)
println "out> $sout\nerr> $serr"

displays:

out> err> ls: cannot access /badDir: No such file or directory

Converting a string to int in Groovy

Use the toInteger() method to convert a String to an Integer, e.g.

int value = "99".toInteger()

An alternative, which avoids using a deprecated method (see below) is

int value = "66" as Integer

If you need to check whether the String can be converted before performing the conversion, use

String number = "66"

if (number.isInteger()) {
  int value = number as Integer
}

Deprecation Update

In recent versions of Groovy one of the toInteger() methods has been deprecated. The following is taken from org.codehaus.groovy.runtime.StringGroovyMethods in Groovy 2.4.4

/**
 * Parse a CharSequence into an Integer
 *
 * @param self a CharSequence
 * @return an Integer
 * @since 1.8.2
 */
public static Integer toInteger(CharSequence self) {
    return Integer.valueOf(self.toString().trim());
}

/**
 * @deprecated Use the CharSequence version
 * @see #toInteger(CharSequence)
 */
@Deprecated
public static Integer toInteger(String self) {
    return toInteger((CharSequence) self);
}

You can force the non-deprecated version of the method to be called using something awful like:

int num = ((CharSequence) "66").toInteger()

Personally, I much prefer:

int num = 66 as Integer

Best Solution

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Groovy executing shell commands

Converting a string to int in Groovy

Deprecation Update

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