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FieldUtils (Joda time 2.1 API)
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SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD>
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DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD>
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org.joda.time.field</FONT>
<BR>
Class FieldUtils</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.joda.time.field.FieldUtils</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>FieldUtils</B><DT>extends java.lang.Object</DL>
</PRE>
<P>
General utilities that don't fit elsewhere.
<p>
FieldUtils is thread-safe and immutable.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>1.0</DD>
<DT><B>Author:</B></DT>
<DD>Stephen Colebourne</DD>
</DL>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#equals(java.lang.Object, java.lang.Object)">equals</A></B>(java.lang.Object object1,
java.lang.Object object2)</CODE>
<BR>
Compares two objects as equals handling null.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#getWrappedValue(int, int, int)">getWrappedValue</A></B>(int value,
int minValue,
int maxValue)</CODE>
<BR>
Utility method that ensures the given value lies within the field's
legal value range.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#getWrappedValue(int, int, int, int)">getWrappedValue</A></B>(int currentValue,
int wrapValue,
int minValue,
int maxValue)</CODE>
<BR>
Utility method used by addWrapField implementations to ensure the new
value lies within the field's legal value range.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeAdd(int, int)">safeAdd</A></B>(int val1,
int val2)</CODE>
<BR>
Add two values throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeAdd(long, long)">safeAdd</A></B>(long val1,
long val2)</CODE>
<BR>
Add two values throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeMultiply(int, int)">safeMultiply</A></B>(int val1,
int val2)</CODE>
<BR>
Multiply two values throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeMultiply(long, int)">safeMultiply</A></B>(long val1,
int scalar)</CODE>
<BR>
Multiply two values throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeMultiply(long, long)">safeMultiply</A></B>(long val1,
long val2)</CODE>
<BR>
Multiply two values throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeMultiplyToInt(long, long)">safeMultiplyToInt</A></B>(long val1,
long val2)</CODE>
<BR>
Multiply two values to return an int throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeNegate(int)">safeNegate</A></B>(int value)</CODE>
<BR>
Negates the input throwing an exception if it can't negate it.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeSubtract(long, long)">safeSubtract</A></B>(long val1,
long val2)</CODE>
<BR>
Subtracts two values throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#safeToInt(long)">safeToInt</A></B>(long value)</CODE>
<BR>
Casts to an int throwing an exception if overflow occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#verifyValueBounds(org.joda.time.DateTimeField, int, int, int)">verifyValueBounds</A></B>(<A HREF="../../../../org/joda/time/DateTimeField.html" title="class in org.joda.time">DateTimeField</A> field,
int value,
int lowerBound,
int upperBound)</CODE>
<BR>
Verify that input values are within specified bounds.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#verifyValueBounds(org.joda.time.DateTimeFieldType, int, int, int)">verifyValueBounds</A></B>(<A HREF="../../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> fieldType,
int value,
int lowerBound,
int upperBound)</CODE>
<BR>
Verify that input values are within specified bounds.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/joda/time/field/FieldUtils.html#verifyValueBounds(java.lang.String, int, int, int)">verifyValueBounds</A></B>(java.lang.String fieldName,
int value,
int lowerBound,
int upperBound)</CODE>
<BR>
Verify that input values are within specified bounds.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
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<A NAME="safeNegate(int)"><!-- --></A><H3>
safeNegate</H3>
<PRE>
public static int <B>safeNegate</B>(int value)</PRE>
<DL>
<DD>Negates the input throwing an exception if it can't negate it.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to negate
<DT><B>Returns:</B><DD>the negated value
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is Integer.MIN_VALUE<DT><B>Since:</B></DT>
<DD>1.1</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="safeAdd(int, int)"><!-- --></A><H3>
safeAdd</H3>
<PRE>
public static int <B>safeAdd</B>(int val1,
int val2)</PRE>
<DL>
<DD>Add two values throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value<DD><CODE>val2</CODE> - the second value
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small</DL>
</DD>
</DL>
<HR>
<A NAME="safeAdd(long, long)"><!-- --></A><H3>
safeAdd</H3>
<PRE>
public static long <B>safeAdd</B>(long val1,
long val2)</PRE>
<DL>
<DD>Add two values throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value<DD><CODE>val2</CODE> - the second value
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small</DL>
</DD>
</DL>
<HR>
<A NAME="safeSubtract(long, long)"><!-- --></A><H3>
safeSubtract</H3>
<PRE>
public static long <B>safeSubtract</B>(long val1,
long val2)</PRE>
<DL>
<DD>Subtracts two values throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value, to be taken away from<DD><CODE>val2</CODE> - the second value, the amount to take away
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small</DL>
</DD>
</DL>
<HR>
<A NAME="safeMultiply(int, int)"><!-- --></A><H3>
safeMultiply</H3>
<PRE>
public static int <B>safeMultiply</B>(int val1,
int val2)</PRE>
<DL>
<DD>Multiply two values throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value<DD><CODE>val2</CODE> - the second value
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small<DT><B>Since:</B></DT>
<DD>1.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="safeMultiply(long, int)"><!-- --></A><H3>
safeMultiply</H3>
<PRE>
public static long <B>safeMultiply</B>(long val1,
int scalar)</PRE>
<DL>
<DD>Multiply two values throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value<DD><CODE>scalar</CODE> - the second value
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small<DT><B>Since:</B></DT>
<DD>1.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="safeMultiply(long, long)"><!-- --></A><H3>
safeMultiply</H3>
<PRE>
public static long <B>safeMultiply</B>(long val1,
long val2)</PRE>
<DL>
<DD>Multiply two values throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value<DD><CODE>val2</CODE> - the second value
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small</DL>
</DD>
</DL>
<HR>
<A NAME="safeToInt(long)"><!-- --></A><H3>
safeToInt</H3>
<PRE>
public static int <B>safeToInt</B>(long value)</PRE>
<DL>
<DD>Casts to an int throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value
<DT><B>Returns:</B><DD>the value as an int
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small</DL>
</DD>
</DL>
<HR>
<A NAME="safeMultiplyToInt(long, long)"><!-- --></A><H3>
safeMultiplyToInt</H3>
<PRE>
public static int <B>safeMultiplyToInt</B>(long val1,
long val2)</PRE>
<DL>
<DD>Multiply two values to return an int throwing an exception if overflow occurs.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val1</CODE> - the first value<DD><CODE>val2</CODE> - the second value
<DT><B>Returns:</B><DD>the new total
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE> - if the value is too big or too small</DL>
</DD>
</DL>
<HR>
<A NAME="verifyValueBounds(org.joda.time.DateTimeField, int, int, int)"><!-- --></A><H3>
verifyValueBounds</H3>
<PRE>
public static void <B>verifyValueBounds</B>(<A HREF="../../../../org/joda/time/DateTimeField.html" title="class in org.joda.time">DateTimeField</A> field,
int value,
int lowerBound,
int upperBound)</PRE>
<DL>
<DD>Verify that input values are within specified bounds.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to check<DD><CODE>lowerBound</CODE> - the lower bound allowed for value<DD><CODE>upperBound</CODE> - the upper bound allowed for value
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/joda/time/IllegalFieldValueException.html" title="class in org.joda.time">IllegalFieldValueException</A></CODE> - if value is not in the specified bounds</DL>
</DD>
</DL>
<HR>
<A NAME="verifyValueBounds(org.joda.time.DateTimeFieldType, int, int, int)"><!-- --></A><H3>
verifyValueBounds</H3>
<PRE>
public static void <B>verifyValueBounds</B>(<A HREF="../../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> fieldType,
int value,
int lowerBound,
int upperBound)</PRE>
<DL>
<DD>Verify that input values are within specified bounds.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to check<DD><CODE>lowerBound</CODE> - the lower bound allowed for value<DD><CODE>upperBound</CODE> - the upper bound allowed for value
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/joda/time/IllegalFieldValueException.html" title="class in org.joda.time">IllegalFieldValueException</A></CODE> - if value is not in the specified bounds<DT><B>Since:</B></DT>
<DD>1.1</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="verifyValueBounds(java.lang.String, int, int, int)"><!-- --></A><H3>
verifyValueBounds</H3>
<PRE>
public static void <B>verifyValueBounds</B>(java.lang.String fieldName,
int value,
int lowerBound,
int upperBound)</PRE>
<DL>
<DD>Verify that input values are within specified bounds.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to check<DD><CODE>lowerBound</CODE> - the lower bound allowed for value<DD><CODE>upperBound</CODE> - the upper bound allowed for value
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/joda/time/IllegalFieldValueException.html" title="class in org.joda.time">IllegalFieldValueException</A></CODE> - if value is not in the specified bounds</DL>
</DD>
</DL>
<HR>
<A NAME="getWrappedValue(int, int, int, int)"><!-- --></A><H3>
getWrappedValue</H3>
<PRE>
public static int <B>getWrappedValue</B>(int currentValue,
int wrapValue,
int minValue,
int maxValue)</PRE>
<DL>
<DD>Utility method used by addWrapField implementations to ensure the new
value lies within the field's legal value range.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>currentValue</CODE> - the current value of the data, which may lie outside
the wrapped value range<DD><CODE>wrapValue</CODE> - the value to add to current value before
wrapping. This may be negative.<DD><CODE>minValue</CODE> - the wrap range minimum value.<DD><CODE>maxValue</CODE> - the wrap range maximum value. This must be
greater than minValue (checked by the method).
<DT><B>Returns:</B><DD>the wrapped value
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if minValue is greater
than or equal to maxValue</DL>
</DD>
</DL>
<HR>
<A NAME="getWrappedValue(int, int, int)"><!-- --></A><H3>
getWrappedValue</H3>
<PRE>
public static int <B>getWrappedValue</B>(int value,
int minValue,
int maxValue)</PRE>
<DL>
<DD>Utility method that ensures the given value lies within the field's
legal value range.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to fit into the wrapped value range<DD><CODE>minValue</CODE> - the wrap range minimum value.<DD><CODE>maxValue</CODE> - the wrap range maximum value. This must be
greater than minValue (checked by the method).
<DT><B>Returns:</B><DD>the wrapped value
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if minValue is greater
than or equal to maxValue</DL>
</DD>
</DL>
<HR>
<A NAME="equals(java.lang.Object, java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public static boolean <B>equals</B>(java.lang.Object object1,
java.lang.Object object2)</PRE>
<DL>
<DD>Compares two objects as equals handling null.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>object1</CODE> - the first object<DD><CODE>object2</CODE> - the second object
<DT><B>Returns:</B><DD>true if equal<DT><B>Since:</B></DT>
<DD>1.4</DD>
</DL>
</DD>
</DL>
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