Return method return several times [closed] - java

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 5 years ago.
Improve this question
I want to make a method return that return several times a String from a list of String. any idea ??


How about something like this:
String getRandomString(List<String> list) {
return list.get(new Random().nextInt(list.size()));
}
This isn't the most efficient way, but should do the job.

Related

How to take out the numbers from the String and eliminate those number and store the filtered String and print it in java [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 2 years ago.
Improve this question
String txt = "d89%l++5r19o7W *o=1645le9H"
System.out.println(t.replace(/\\d{0,}/g,''));

Because i'm bored...
String txt = "d89%l++5r19o7W *o=1645le9H";
txt = txt.replaceAll("\\d", "")
System.out.println(txt);

This will all numerical charactors from string
System.out.println(string.replaceAll("\\d",""));

How do I use only one element of an ArrayList? Java [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 7 years ago.
Improve this question
If I have an initialized array in Java and I want to do a method to one element in that array I would do
array[n].method();
but how do I do the same thing with an arraylist?
arraylist[n].method() gives me an error.

With Java use get method with ArrayList:
arraylist.get(n).method();

How to print a number with commas as thousands separators in Java..And I also want to print just 2 number after the point [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
I am trying to print this integer 12345679 like 1,234,68. I was trying to do like this.
System.out.println(count+" "+"$"+fm.format(NumberFormat.getNumberInstance(Locale.US).format(avg)));
How can I do this in java??

NumberFormat currencyInstance = NumberFormat.getCurrencyInstance(Locale.US);
currencyInstance.setMaximumFractionDigits(0);
System.out.println(currencyInstance.format(12345679));
Output: $12,345,679

How to parse String vars in Java? [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
What is the best way to parse a String value that looks like this id#1 ...id#398, so I can get de number after the id# String in JAVA.

If id# is a fixed prefix in every ID, I would have used
stringValue.split("id#")[0]

Make a list from the other different type of list [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
I have a List<A> of data, and wanna store it to the other list(List<B>).
any suggestion to make it possible?

You can use the Collections.copy(ListA, ListB) method, or even, if you're working with ArrayLists: ListB = ListA.clone()

Categories