How can I iterate over an Array object by using For IN or FOR OF

class Foo {
 private String name;
 private TreeSet<Item> items;

 public Foo(String name) {
    this.name = name;
    items = new TreeSet<Item>();
 }
 public String getName() { return name; }
 public void setName(String name) {this.name = name;}
 public TreeSet<Item> getItems() {return items; }
 public void addItem(Integer id, Integer value) {
    items.add(new Item(id, value));
 }

 public class Item implements Comparable {
    @Override
    public int compareTo(Object arg0) {
        Item i = (Item) arg0;
        if (id == i.id)
            return 0;
        else if (id > i.id)
            return 1;
        else
            return -1;
    }

    private Integer id;
    private Integer value;

    public Item(Integer id, Integer value) {
        this.id = id;
        this.value = value;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Integer getValue() {
        return value;
    }

    public void setValue(Integer value) {
        this.value = value;
    }
}

List<Foo> list = new ArrayList<Foo>();
list.add(new Foo("aa"));
list.add(new Foo("bb"));
list.add(new Foo("cc"));
list.add(new Foo("dd"));

list.get(0).addItem(1, 4);
list.get(0).addItem(2, 2);
list.get(0).addItem(3, 3);
list.get(1).addItem(3, 1);
list.get(1).addItem(1, 1);
list.get(1).addItem(2, 8);
list.get(2).addItem(3, 3);
list.get(3).addItem(2, 10);
list.get(0).addItem(5, 10);

for (Foo foo : list) {
 System.out.print(foo.getName());
 Foo.Item[] ar = foo.getItems().toArray(new Foo.Item[0]);
 for (int i = 1, j = 0; i <= 8; i++) {
   if (j >= ar.length)
    System.out.print(" - ");
   else if (ar[j].getId() == i) {
    System.out.print(" " + ar[j].getValue());
    j++;
   } else
        System.out.print(" - ");
  }
  System.out.println();
}

transform = function(obj, fun) {
    if (typeof obj != "object")
        return fun(obj);
    Object.keys(obj).forEach(function(k) {
        obj[k] = transform(obj[k], fun);
    });
    return obj;
}

transform(yourData, function(val) {
    if (val.replace)
        return val.replace(/bad/g, "censored");
    else
        return val;
})

var array = [{
  ticket: 'TICKET1',
  associated_val: 'AB'
}, {
  ticket: 'TICKET1',
  associated_val: 'XY'
}, {
  ticket: 'TICKET1',
  associated_val: 'CD'
}, {
  ticket: 'TICKET2',
  associated_val: 'YZ'
}, {
  ticket: 'TICKET2',
  associated_val: 'EF'
}, {
  ticket: 'TICKET3',
  associated_val: 'AB'
}, {
  ticket: 'TICKET4',
  associated_val: null
}];

var newarray = [],
  tmp = {},
  item;
for (var i = 0; i < array.length; i++) {
  item = array[i];
  if (!tmp[item.ticket]) {
    tmp[item.ticket] = {
      ticket: item.ticket,
      associated_val_array: []
    };
    newarray.push(tmp[item.ticket]);
  }
  if (item.associated_val != null) {
    tmp[item.ticket].associated_val_array.push(item.associated_val);
  }
}

console.log(newarray)

$scope.getValues = function(configuration) {
    var values = [];
    configuration.forEach(function(c) {
      values = values.concat(Object.values(c));
    });
    return values
}

<tr ng-repeat="x in array| filter: {configured: true}">
    <td ng-repeat="val in getValues(x.configuration)" ng-bind="::val"></td>
</tr>

<ons-button (click)="getToplistByTotalVolume()">Aktualisieren</ons-button>
<ons-list id="crypto-container" *ngFor="let toplistByTotalVolumeItem of toplistByTotalVolume.Data;">
  <ons-list-item>
    <div class="center">
        {{ toplistByTotalVolumeItem.CoinInfo.FullName }}
    </div>
  </ons-list-item>
</ons-list>

getToplistByTotalVolume() {
  this._data.serviceToplistByTotalVolume(this.fiatCurrency)
    .subscribe(res => {
      this.toplistByTotalVolume = res.Data; //<--Here
      console.log(res); //<--This will log the entire response
      console.log(this.toplistByTotalVolume); //<--This will only log the `Data` property of the response, which is your array
    });
}

<ons-list id="crypto-container" *ngFor="let toplistByTotalVolumeItem of toplistByTotalVolume;">