Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import android.text.TextUtils;

public class Main {
    public static final String filterUCS4(String str) {
        if (TextUtils.isEmpty(str)) {
            return str;
        }

        if (str.codePointCount(0, str.length()) == str.length()) {
            return str;
        }

        StringBuilder sb = new StringBuilder();

        int index = 0;
        while (index < str.length()) {
            int codePoint = str.codePointAt(index);
            index += Character.charCount(codePoint);
            if (Character.isSupplementaryCodePoint(codePoint)) {
                continue;
            }

            sb.appendCodePoint(codePoint);
        }

        return sb.toString();
    }

    public static boolean isEmpty(String input) {
        if (input == null || "".equals(input) || "null".equals(input.toLowerCase()))
            return true;

        for (int i = 0; i < input.length(); i++) {
            char c = input.charAt(i);
            if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {
                return false;
            }
        }
        return true;
    }
}