Removes control characters (char <= 32) from both ends of this String returning an empty String ("") if the String is empty ("") after the trim or if it is null. - Android java.lang

Android examples for java.lang:Character

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Description

Removes control characters (char <= 32) from both ends of this String returning an empty String ("") if the String is empty ("") after the trim or if it is null.

Demo Code

import android.graphics.Paint;
import android.text.TextUtils;
import android.widget.TextView;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main{

    /**//from  w  w w  .j a  va 2  s  .  com
     * <p>
     * Removes control characters (char &lt;= 32) from both ends of this String returning an empty String ("") if the String is empty ("") after the trim or if
     * it is {@code null}.
     * 
     * <p>
     * The String is trimmed using {@link String#trim()}. Trim removes start and end characters &lt;= 32. To strip whitespace use {@link #stripToEmpty(String)}.
     * </p>
     * 
     * <pre>
     * StringUtils.trimToEmpty(null)          = ""
     * StringUtils.trimToEmpty("")            = ""
     * StringUtils.trimToEmpty("     ")       = ""
     * StringUtils.trimToEmpty("abc")         = "abc"
     * StringUtils.trimToEmpty("    abc    ") = "abc"
     * </pre>
     * 
     * @param str
     *            the String to be trimmed, may be null
     * @return the trimmed String, or an empty String if {@code null} input
     * @since 2.0
     */
    public static String trimToEmpty(String str) {
        return str == null ? EMPTY : str.trim();
    }

}

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