return true if any CJK characters appear in String s. - Java java.lang

Java examples for java.lang:String Unicode

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Description

return true if any CJK characters appear in String s.

Demo Code


//package com.java2s;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static void main(String[] argv) throws Exception {
        String s = "java2s.com";
        System.out.println(hasCJK(s));
    }//from  www .  j  a v  a 2 s .c om

    static Pattern isCJK_pattern = null;

    /**
     * Unlike isCJK(s), hasCJK(s) will return true if any CJK characters appear in String s.
     */
    public static Boolean hasCJK(String s) {
        if (isCJK_pattern == null)
            isCJK_pattern = Pattern
                    .compile("[\\p{IsHan}\\p{IsHangul}\\p{IsKatakana}\\p{IsHiragana}]");
        Matcher m = isCJK_pattern.matcher(s);
        return m.find();
    }
}

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