Question

for (Map.Entry<String, Map<String, List>> entry:Map1.entrySet()) 
{
    String key=entry.getKey();
    System.out.println("Type : " +key);

    for (Map.Entry<String, List> entry1 : entry.getKey().getValue().entrySet())
    {
        System.out.println("Type : " + entry1.getKey());
    }
}

I don’t know what should be used in place of entry.getKey().getValue().entrySet(). Can any one explains me to understand this. This is for iterating nested map.

the error I got was

.\common\devtracker\process\devtr\DevTrackerImpl.java:226: cannot find symbol
symbol  : method getValue()
location: class java.lang.String
for (Map.Entry<String, List<ProjectBreakupVO>>    entry1:entry.getKey().getValue().entrySet())

Answer 1

entry.getKey() does not have the method getValue(), as its just returning a string. What you probably want here

for (Map.Entry<String, List> entry1 : entry.getKey().getValue().entrySet())

is instead to do

for (Map.Entry<String, List> entry1 : entry.getValue().entrySet())