Java Tutorial : Java StringBuilder [codePointBefore(int index) method]

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Java Tutorial : Java StringBuilder [codePointBefore(int index) method] 

StringBuilderDemo.java

/*
 * public int codePointBefore(int index)
 * 
 * Parameters: 
 * ---------- 
 * index - the index following the code point that
 * should be returned
 * 
 * Returns: 
 * ------- 
 * the Unicode code point value before the given index.
 */

public class StringBuilderDemo
{

    public static void main(String[] args)
    {
        String str = "JAVA";
        StringBuilder sb = new StringBuilder(str);
        System.out.println("sb = " + sb);

        // codepoint before index 1 i.e J
        int retval = sb.codePointBefore(1);

        // prints character before index1 in string
        System.out.println("Character(unicode point) = " + retval);

    }
}

Output

sb = JAVA
Character(unicode point) = 74

Refer:

https://en.wikipedia.org/wiki/List_of_Unicode_characters

Click the below link to download the code:
https://sites.google.com/site/javaee4321/java/StringBuilderDemo_codePointBefore_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/StringBuilderDemo_codePointBefore_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/c539eeaf4c6ff331d8e2aa2333826ea70c999093/BasicJava/StringBuilderDemo_codePointBefore_App/?at=master

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