Question

I have following piece of code :

public Hashmap<String,String> tempmap = new HashMap<String,String>();

and a class function :

void f1(){
    synchronized(onClassVariable1){
    ....Some code onClassVariable1...
    String tempString = tempMap.toString();
    ... Some work onClassVarible1 and tempString ...
    }
  }

Multiple thread call this function f1 through an object of this class ..

is this function thread-safe ??

Answer 1

It depends on whether there are methods which don’t synchronize on onClassVariable1 and modify tempMap.