Example usage for java.lang String isEmpty

Introduction

In this page you can find the example usage for java.lang String isEmpty.

Prototype

public boolean isEmpty()

Source Link

Document

Returns true if, and only if, #length() is 0 .

Usage

From source file:Main.java

/**
 * Will parse a color and set it as text color
 * @param color a string that can be converted into a hex color e.g #000fff
 * @param v textview//from   w  ww .j a v  a  2  s .c  o m
 */
public static void setTextColor(String color, TextView v) {
    v.setTextColor(Color.parseColor(color.isEmpty() ? "#000000" : color));
}

From source file:Main.java

private static String unescape(String str) {
    StringBuilder sb = new StringBuilder();
    String[] codeStrs = str.split("\\\\u");
    for (String codeStr : codeStrs) {
        if (codeStr.isEmpty()) {
            continue;
        }//  w w w  . jav a2  s  .  c o m
        try {
            if (codeStr.length() <= 4) {
                sb.append(Character.valueOf((char) Integer.parseInt(codeStr, 16)));
            } else {
                sb.append(Character.valueOf((char) Integer.parseInt(codeStr.substring(0, 4), 16)));
                sb.append(codeStr.substring(4));
            }
        } catch (NumberFormatException e) {
            sb.append(codeStr);
        }
    }
    return sb.toString();
}

From source file:Main.java

/**
 * remove more than two spaces or newlines
 *///from   w  ww  . j  ava2s.c  o m
public static String innerTrim(String str) {
    if (str.isEmpty())
        return "";

    StringBuilder sb = new StringBuilder();
    boolean previousSpace = false;
    for (int i = 0; i < str.length(); i++) {
        char c = str.charAt(i);
        if (c == ' ' || (int) c == 9) {
            previousSpace = true;
            continue;
        }

        if (previousSpace)
            sb.append(' ');

        previousSpace = false;
        sb.append(c);
    }
    return sb.toString().trim();
}

From source file:Main.java

/**
 * remove more than two spaces or newlines
 *//*  w w w  .  j a  va 2s  .  c o m*/
public static String innerTrim(String str) {
    if (str.isEmpty())
        return "";

    StringBuilder sb = new StringBuilder(str.length());
    boolean previousSpace = false;
    for (int i = 0, length = str.length(); i < length; i++) {
        char c = str.charAt(i);
        if (c == ' ' || (int) c == 9 || c == '\n') {
            previousSpace = true;
            continue;
        }

        if (previousSpace)
            sb.append(' ');

        previousSpace = false;
        sb.append(c);
    }
    return sb.toString().trim();
}

From source file:Main.java

/**
 * remove more than two spaces or newlines
 *//*from  ww  w.  j  a v  a2s . com*/
public static String innerTrim(String str) {
    if (str.isEmpty())
        return "";

    StringBuilder sb = new StringBuilder();
    boolean previousSpace = false;
    for (int i = 0; i < str.length(); i++) {
        char c = str.charAt(i);
        if (c == ' ' || (int) c == 9 || c == '\n') {
            previousSpace = true;
            continue;
        }

        if (previousSpace)
            sb.append(' ');

        previousSpace = false;
        sb.append(c);
    }
    return sb.toString().trim();
}

From source file:example.ToCommonsEmpty.java

public static void main2(String[] args) {
    String s = "";

    boolean a = s == null || s.length() == 0;
    boolean b = s == null || s.isEmpty();
    boolean c = s != null && s.isEmpty();
    boolean d = s != null && s.length() == 0;
}

From source file:Main.java

public static Boolean IsInt(String string) {
    try {/*www. j a v  a  2  s .c om*/
        if (string == null || string.isEmpty()) {
            return false;
        } else {
            return Integer.parseInt(string) > 0;
        }
    } catch (Exception e) {
        return false;
    }
}

From source file:Main.java

public static long strToLong(String strVal) {
    if (strVal == null || strVal.isEmpty())
        return 0;

    byte[] vals = strVal.getBytes();
    int tailFlag = vals.length > 8 ? 8 : vals.length;
    long result = 0;
    for (int i = 0; i < tailFlag; i++) {
        result = result << 8;/*ww  w  .j  a va2 s  .  co m*/
        result += vals[i];
    }
    return result;
}

From source file:Main.java

public static Boolean IsNullOrEmpty(String string) {
    try {/*from   ww w  . ja v  a  2s . co m*/
        if (string == null || string.isEmpty()) {
            return true;
        } else {
            return false;
        }
    } catch (Exception e) {
        return true;
    }
}

From source file:Main.java

public static int parseColorFromString(String color) {
    int colorInt;
    if (color != null && !color.isEmpty() && !color.substring(0, 1).equals("#")) {
        colorInt = Color.parseColor("#" + color);
    } else {//from  w  w  w .java2s. co  m
        colorInt = Color.parseColor(color);
    }
    return colorInt;
}