Java String.substring() to get part of the string by using start and end position

String.substring(int StartIndex, int EndIndex) part of the string using positions.
StartIndex : Required, Integer showing starting position
EndIndex : (Optional ) Integer showing end position, if not given then till end of the string is considered.

Note that our first position starts with 0 ( Not 1 ).
This image shows position of each char in our string for easy understanding of the below example.
Java substring()

Here are some examples with output.

String str = "Welcome to plus2net.com";

System.out.println(str.substring(11));//plus2net.com
System.out.println(str.substring(11,15));//plus
System.out.println(str.substring(4)); // ome to plus2net.com
System.out.println(str.substring(4,5)); // o

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string.substring()

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