microsoft-azure-storage/src/com/microsoft/azure/storage/core/Utility.java
public static void assertNotNullOrEmpty(final String param, final String value) {
        assertNotNull(param, value);

        if (Utility.isNullOrEmpty(value)) {
            throw new IllegalArgumentException(String.format(Utility.LOCALE_US, SR.ARGUMENT_NULL_OR_EMPTY, param));
        }
    }
public static void assertNotNullOrEmpty(final String param, final String value) {
        assertNotNull(param, value);

        if (Utility.isNullOrEmpty(value)) {
            throw new IllegalArgumentException(String.format(Utility.LOCALE_US, SR.ARGUMENT_NULL_OR_EMPTY, param));
        }
    }
Asserts that the specified string is not <code>null</code> or empty.

@param param
A <code>String</code> that represents the name of the parameter, which becomes the exception message
text if the <code>value</code> parameter is <code>null</code> or an empty string.
@param value
A <code>String</code> that represents the value of the specified parameter. This is the value being
asserted as not <code>null</code> and not an empty string.