How to use substring in Java

How to use substring in Java

str=str.substring (int beginindex), intercept str from the initial letter length of Beginindex string, the remaining string is assigned to STR;

str=str.substring (int beginindex,int endIndex), intercepts the string from Beginindex to EndIndex at the end of STR and assigns it to STR;

Here is a demo program:

public class stringdemo{

public static void Main (String agrs[]) {

String Str= "This is my original string";

String todelete= "original";

if (Str.startswith (Todelete))

Str=str.substring (Todelete.length ());

Else

if (Str.endswith (Todelete))

Str=str.substring (0, Str.length ()-todelete.length ());

Else

{

int Index=str.indexof (todelete);

if (index!=-1)

{

String str1=str.substring (0, index);

String str2=str.substring (Index+todelete.length ());

STR=STR1+STR2;

}

Else

System.out.println ("string/" "+todelete+"/"Not Found");

}

System.out.println (str);

}

}

(Original quote from: http://hi.baidu.com/ccsos/blog/item/42ff84afe6e62bcd7dd92a62.html)

Add: str=str.substring (int beginindex,int endIndex); The value that is finally obtained:

Beginindex =< str Values < EndIndex

The above supplement is a bit of my own understanding of the recent comments in the API to see it, put it in the following so many others and I just started to learn better understanding of the above procedure substring

substring (int beginindex,                        int endIndex)

Returns a new string that is a substring of this string. The substring starts at the specified Beginindex and continues to the character at the index endIndex-1 . Therefore, the length of the substring is endindex-beginindex .

Demo Sample:

 "Hamburger". Substring (4, 8) returns "Urge" "smiles". Substring (1, 5) returns "Mile" 

Number:

beginindex -the index (inclusive) at the beginning.

endIndex -the index at the end (not included).

Returns:

the specified substring.

Thrown:

indexoutofboundsexception -assuming beginindex endIndex is greater than the length of this String object, or beginindex is greater than EndIndex .