How to extract all numbers from a string in java?

general
1

How to extract all numbers from a string in java?

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Suppose the String is n
then array s will contain all the numbers present in the String

String n=sc.next();

String[] s = n.split("[a-zA-Z]+");

eg
n=“abc1defghi23jvkfbd57jnfbddj9”

then s will be

1,23,57,9

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3

String str=“sdfvsdf68fsdfsf8999fsdf09”;
String numberOnly= str.replaceAll("[^0-9]", “”);

anything other then 0-9 will be replaced even the , ? ! and all other things .

4

can we do the same thing with cpp or python?