New to java, need to learn how to store multiple Doubles with the same name -

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i new java , want learn how store different values double. code asks user how many times calculate equation, each time entering different values. program takes numbers entered plugs them formula , produces answer. problem comes trying take answers generated , totaling them, have no idea how this.

double wt, rep, t = .0333333, rm = 0, lts; string initwt, initrep, lt;  lt = joptionpane.showinputdialog ( "how many lifts calculate" );  lts = integer.parseint (lt);  if (lts < 0){ joptionpane.showmessagedialog (null, "you entered invalid number");  system.exit(0); }  while (lts > 0){  initwt = joptionpane.showinputdialog ( "please enter inital weight" );  wt = integer.parseint (initwt);  initrep = joptionpane.showinputdialog ( "please enter amount of reps" );  rep = integer.parseint (initrep);   /* want take each rm value, , store it, can total later.*/ rm = wt * rep * t + wt;     joptionpane.showmessagedialog (null, "your 1 rep max " + rm );   lts --;   }  int dialogbutton = joptionpane.showconfirmdialog(null, "would see total?", "please choose one", joptionpane.yes_no_option);  /* want bring rm values , total them display here */ if (dialogbutton == joptionpane.yes_option){    joptionpane.showmessagedialog (null, "your combined totals " + rm ); } else if (dialogbutton == joptionpane.no_option){     system.exit(0); } }

you can't store multiple values same name. can use array:

double[] doubles = new double[/* size */];

and access it:

doubles[0] = 5.0; system.out.println(doubles[0]); // 5.0

or have multiple doubles:

double d1 = 5.0; double d2 = 3.0;  system.out.println(d1); // 5.0

or can use collection:

list<double> doubles = new arraylist<double>();

and access it:

doubles.add(5.0); system.out.println(doubles.get(0)) // 0 index, prints 5.0

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