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Java.lang.StringBuilder.codePointBefore() Method
Description
The java.lang.StringBuilder.codePointBefore() method returns the character (Unicode code point) before the specified index. The index refers to char values (Unicode code units) and ranges from 1 to length().
Declaration
Following is the declaration for java.lang.StringBuilder.codePointBefore() method
public int codePointBefore(int index)
Parameters
index − This is the index following the code point that should be returned.
Return Value
This method returns the Unicode code point value before the given index.
Exception
IndexOutOfBoundsException − if the index argument is less than 1 or greater than the length of this sequence.
Example
The following example shows the usage of java.lang.StringBuilder.codePointBefore() method.
package com.tutorialspoint; import java.lang.*; public class StringBuilderDemo { public static void main(String[] args) { StringBuilder str = new StringBuilder("programming"); System.out.println("string = " + str); // returns the codepoint before index 3 int retval = str.codePointBefore(3); System.out.println("Character(unicode point) = " + retval); str = new StringBuilder("amrood admin "); System.out.println("string = " + str); // returns the codepoint before index 6 retval = str.codePointBefore(6); System.out.println("Character(unicode point) = " + retval); } }
Let us compile and run the above program, this will produce the following result −
string = programming Character(unicode point) = 111 string = amrood admin Character(unicode point) = 100
java_lang_stringbuilder.htm
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