Unable to resolve class Map.Entry with gradle 2.12


(Russell Genna) #1

We are trying out gradle 2.12 with our existing build and it appears to have an issue which doesn’t exist with the previous versions. I’ve been able to define a simple build.gradle file which reproduces the issue. This build file works perfectly fine with gradle 2.9 and 2.11 but with 2.12 the error message when processing the build.gradle is:

FAILURE: Build failed with an exception.

  • Where:
    Build file ‘***********/build.gradle’ line: 9

  • What went wrong:
    Could not compile build file ‘******/build.gradle’.

startup failed:
build file ‘***********/build.gradle’: 9: unable to resolve class Map.Entry
@ line 9, column 1.
for(Map.Entry entry : properties.entrySet()) {

1 error

The build.gradle contents:
apply plugin: ‘base’

Properties properties = new Properties()
File propertiesFile = new File(rootProject.projectDir, ‘gradle.properties’)
propertiesFile.withInputStream {

for(Map.Entry entry : properties.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
rootProject.ext.setProperty(key, value)
println “${key}=${value}”

And the gradle.properties in the same directory just has:

With older releases of gradle the file works:

gradle build
:assemble UP-TO-DATE
:check UP-TO-DATE
:build UP-TO-DATE


Total time: 3.335 secs

(Sterling Greene) #2

This appears to be a bug. I raised GRADLE-3423

This is enough to reproduce it: Map.Entry entry = null

As a workaround, you could import java.util.Map.Entry and then only use Entry (instead of Map.Entry) or just use def:

for(def entry : properties.entrySet())

or more Groovy-like (this is off the top of my head)…

properties.each { k,v ->
  rootProject.ext.setProperty(k, v)
  println "$k = $v"

(Sterling Greene) #3

There should be a fix for this coming in Gradle 2.13 (RC probably next week).


Same issue here, as a workaround I’ll use a full qualified reference instead of an import:

def config = new Properties()
for (java.util.Map.Entry property in config) {