java - Get Largest Number from a list of numbers -

    public void getjustrevisionsnumberdata(string duanum) {     list<number> dua = new arraylist<number>();     dua = getrevisionsnum(duanum);       // dua object -> 123, 843, 455, 565     // want 843      for(number number : dua) {          system.out.println(number);      } } 

getrevisionsnum

    public list<number> getrevisionsnum(string duanum) {     session session = factory.opensession();      auditreader auditreader = auditreaderfactory.get(session);     return auditreader.getrevisions(duavo.class, duanum); 

i'm trying largest number unable come solution. suggestions?

you can keep track of largest number you've come across far in variable largestnumber, , once you've iterated through whole set, can print out system.out.println(largestnumber) outside of loop.

double largestnumber = double.min_value; for(number number: dua) {     if(number.doublevalue() > largestnumber)         largestnumber = number; } system.out.println(largestnumber); 

setting largestnumber double.min_value ensures if you're dealing large negative numbers, should still satisfy number.doublevalue() > largestnumber. calling .doublevalue() in comparison necessary you'll have 2 doubles compare.