C # And Substring () in Java (),

C # And Substring () in Java (),

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Substring () in C ()

Example

Implementation Code

Using System; Using System. Collections. Generic; Using System. Linq; Using System. Text; Using System. Threading. Tasks; Namespace WindowsDemo { Class Program { Static void Main (string [] args) { // Call external functions SubStringDemo (); } // Obtain the sub-string Function Static void subStringDemo () { String str = "123456 "; String subStr1 = str. Substring (5 ); String subStr2 = str. Substring (0, 5 ); Console. WriteLine ("single parameter:" + subStr1 ); Console. WriteLine ("two parameters:" + subStr2 ); Console. ReadKey (); } } }

Through the example, we can conclude that the input parameters of Substring () are different, and the execution functions are also different.

• When A parameter is passed in, for example, Substring (A) indicates to intercept from the specified index number A of the original string until the last one of the original string;
• When two parameters are passed in, for example, Substring (A, B) indicates that the obtained string length is B starting from the character whose original string index number is;

Note:

If the input parameter is invalid, an ArgumentsOutOfRangeException error is thrown.

 

 

Substring () in Java ()

Example

Implementation Code

String str = "123456 "; SubStr = str. Substring (2, 5 ); System. Output. println (subStr );   // Output result 345

From the preceding example, we can conclude that:

Str. Substring (A, B) indicates the character from string A to string B, which must contain A, which does not contain B, that is, [A, B ).

Note:

If the parameter is invalid, the IndexOutOfBoundsException error is thrown.