Check if string has Text - Android java.lang

Android examples for java.lang:String Null or Empty

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Description

Check if string has Text

Demo Code

import android.content.Context;
import android.text.TextUtils;
import android.util.Log;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Locale;

public class Main{

    /**/*w  w w . jav  a2  s.c  o  m*/
     * Check whether the given CharSequence has actual text.
     * More specifically, returns {@code true} if the string not {@code null},
     * its length is greater than 0, and it contains at least one non-whitespace character.
     * <p><pre class="code">
     * StringUtils.hasText(null) = false
     * StringUtils.hasText("") = false
     * StringUtils.hasText(" ") = false
     * StringUtils.hasText("12345") = true
     * StringUtils.hasText(" 12345 ") = true
     * </pre>

     */
    public static boolean hasText(CharSequence str) {
        if (!hasLength(str)) {
            return false;
        }
        int strLen = str.length();
        for (int i = 0; i < strLen; i++) {
            if (!Character.isWhitespace(str.charAt(i))) {
                return true;
            }
        }
        return false;
    }
    /**
     * Check whether the given String has actual text.
     * More specifically, returns {@code true} if the string not {@code null},
     * its length is greater than 0, and it contains at least one non-whitespace character.

     */
    public static boolean hasText(String str) {
        return hasText((CharSequence) str);
    }
    /**
     * <p><pre class="code">
     * StringUtils.hasLength(null) = false
     * StringUtils.hasLength("") = false
     * StringUtils.hasLength(" ") = true
     * StringUtils.hasLength("Hello") = true
     * </pre>

     */
    public static boolean hasLength(CharSequence str) {
        return (str != null && str.length() > 0);
    }

    public static boolean hasLength(String str) {
        return hasLength((CharSequence) str);
    }
}

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