Java intercepts string functions. java intercepts strings.

Java intercepts string functions. java intercepts strings.

Substring

Public String substring (int beginIndex) returns a new String, which is a substring of this String. The substring starts with a character at the specified index until the end of the string.
For example:
"Unhappy". substring (2) returns "happy"
"Harbison". substring (3) returns "bison"
"Emptiness". substring (9) returns "" (an empty string)
Parameters:
BeginIndex-the index at the beginning (including ).
Return Value:
The specified substring.
Throw:
IndexOutOfBoundsException-If beginIndex is negative or greater than the length of this String object

Example

/*

* If the content is too long, the xml file may be too large and loading is too slow.

* From the seo perspective, all outputs are good for search engines, but the content is usually not too much.

* To prevent the css from being subject to space wrapping, the space is replaced by a regular expression. Therefore, the first 100 characters are truncated and the content displayed on the page is subject to css control.

 

* Zdz works

The Code is as follows:
*/

// Str. trim (). replaceAll ("\ s + ","");

String contenttemp = rs. getString (contentName). trim (). replaceAll ("\ s + ","");

// NpfDebug. print (contenttemp. length ());

If (conten (www.111cn.net) ttemp. length ()> 100) {// intercept if the length is greater than 100

Contenttemp = contenttemp. substring (0,100 );

// NpfDebug. print ("contenttemp. length ()> 100? "+ Contenttemp. length () +" n "+ contentStr );

}

Rsbody. append (beforCONTENT );

Rsbody. append (contenttemp );

Rsbody. append (endCONTENT );

 

Returns the real length of a string and the string function with a fixed length.

Function getInterceptedStr (sSource, iLen)

{

If (sSource. replace (/[^ x00-xff]/g, "xx"). length <= iLen)

{

Return sSource;

}

Var ELIDED = "";

 

Var str = "";

Var l = 0;

Var schar;

For (var I = 0; schar = sSource. charAt (I); I ++)

{

Str + = schar;

L ++ = (schar. match (/[^ x00-xff]/)! = Null? 2: 1 );

If (l> = iLen-ELIDED. length)

{

Break;

}

}

Str + = ELIDED;

 

Return str;

From: http://www.111cn.net/jsp/Java/46329.htm

Java truncation string

Public String getString (String str, String str1 ){
Int index = str1.indexOf (str); // str1 indicates the character to be truncated. Str is the truncated character.
Return str. subString (index + 1, str. length );
}

Java string truncation Function

This program first converts the string to a byte array and then intercepts the string based on the length of the string you want to intercept.
Byte bt [] = str. getBytes (); // convert it to a byte array.
If (bt [byteNum] <0) // determine the truncation length. The Truncation length cannot be less than 0.
{
String substrx = new String (bt, 0, -- byteNum );
/* String (byte [] ascii, int hibyte)
Expired. This method cannot correctly convert bytes into characters. From JDK 1.1, the preferred method to complete the conversion is to use the String constructor, which accepts a Character Set Name or uses the default Character Set of the platform. */

// Suggestion: Check the API more when learning.
Reference: jdk 1.5 api