Java Utililty Methods Boolean From

List of utility methods to do Boolean From

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Description

The list of methods to do Boolean From are organized into topic(s).

Method

booleantoBoolean(final Object value, final boolean defaultValue)
to Boolean 
final Boolean v = toBoolean(value);
return v == null ? defaultValue : v.booleanValue();
BooleantoBoolean(final Object valueRep)
to Boolean 
return Boolean.parseBoolean(String.valueOf(valueRep));
booleantoBoolean(final String booleanString, final boolean defaultValue)
Retrieves whether the given value is true 
return toBoolean(booleanString, TRUE, FALSE, defaultValue);
booleantoBoolean(final String s)
Convert a string into a boolean primitive (i.e. 
String temp = s.toUpperCase();
return "TRUE".equals(temp) || "YES".equals(temp) || "ON".equals(temp);
booleantoBoolean(final String s)
to Boolean 
return "true".equalsIgnoreCase(s) || "1".equalsIgnoreCase(s) || "on".equalsIgnoreCase(s)
        || "enable".equalsIgnoreCase(s) || "yes".equalsIgnoreCase(s);
booleantoBoolean(final String source)
Returns true if the source string evaulates (case insensative and trimmed) to true, yes, or on. 
return toBoolean(source, false);
StringtoBoolean(final String string)
to Boolean 
return Boolean.valueOf(string).toString();
booleantoBoolean(final String strTransparent)
Parse a boolean from a string value. 
if (strTransparent == null) {
    return false;
return Boolean.parseBoolean(strTransparent.trim());
ObjecttoBoolean(final String val)
to Boolean 
if (val.equalsIgnoreCase("on")) {
    return Boolean.TRUE;
} else if (val.equalsIgnoreCase("off")) {
    return Boolean.FALSE;
return Boolean.parseBoolean(val);
BooleantoBoolean(final String value)
Convert a String to a boolean using the smart way
  • if the String is NULL, the Boolean will be NULL.
  • if the String can be cast to a long, the boolean will be TRUE if the long value is > 0, otherwise FALSE.
  • if the String is equal to "true", "yes" or "ok" the boolean will be TRUE.
  • if the String is equal to "false", "no" or "ko" the boolean will be FALSE.
  • all other cases will throw an IllegalArgumentException
    • if (value == null) {
    return null;
if ("true".equals(value) || "yes".equals(value) || "ok".equals(value)) {
    return true;
} else if ("false".equals(value) || "no".equals(value) || "ko".equals(value)) {
    return false;
try {
    return Integer.valueOf(value) > 0;
} catch (final NumberFormatException e) {
    throw new IllegalArgumentException(value + " is not a valid boolean value");