How to check if a string contains a digit and return true

String class in java represent character strings .Just like other constants Strings values cannot be changed.String objects  can be shared and they are immutable.Example of a  string in java

String str=”Eric loves programming”.

Today we are going to use different String class methods to write a method that returns true if a string contains a digit.

Using isDigit () and toCharArray () java methods


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