org.apache.calcite.avatica.util

Class Spaces

java.lang.Object

org.apache.calcite.avatica.util.Spaces

public class Spaces
extends Object

Utilities for creating strings of spaces.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Spaces.SpaceList List whose ith entry is a string consisting of i spaces.
private static class	Spaces.SpaceString A string of spaces.

Field Summary

Fields

Modifier and Type	Field and Description
static CharSequence	MAX The longest possible string of spaces.
private static List<String>	SPACE_LIST It doesn't look like this list is ever updated.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Spaces()

Method Summary

Methods

Modifier and Type	Method and Description
static Appendable	append(Appendable buf, int n) Appends n spaces to an Appendable.
static PrintWriter	append(PrintWriter pw, int n) Appends n spaces to a PrintWriter.
static StringBuffer	append(StringBuffer buf, int n) Appends n spaces to a StringBuffer.
static StringBuilder	append(StringBuilder buf, int n) Appends n spaces to a StringBuilder.
static StringWriter	append(StringWriter pw, int n) Appends n spaces to a StringWriter.
static String	of(int n) Returns a string of n spaces.
static String	padLeft(String string, int n) Returns a string that is padded on the left with spaces to the given length.
static String	padRight(String string, int n) Returns a string that is padded on the right with spaces to the given length.
static CharSequence	sequence(int n) Creates a sequence of n spaces.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SPACE_LIST

private static final List<String> SPACE_LIST

It doesn't look like this list is ever updated. But it is - when a call to to Spaces.SpaceList.get(int) causes an IndexOutOfBoundsException.

MAX

public static final CharSequence MAX

The longest possible string of spaces. Fine as long as you don't try to print it.

Use with StringBuilder.append(CharSequence, int, int) to append spaces without doing memory allocation.

Constructor Detail

Spaces

private Spaces()

Method Detail

sequence

public static CharSequence sequence(int n)

Creates a sequence of n spaces.

of

public static String of(int n)

Returns a string of n spaces.

append

public static Appendable append(Appendable buf,
                int n)
                         throws IOException

Appends n spaces to an Appendable.

Throws:

IOException

append

public static PrintWriter append(PrintWriter pw,
                 int n)

Appends n spaces to a PrintWriter.

append

public static StringWriter append(StringWriter pw,
                  int n)

Appends n spaces to a StringWriter.

append

public static StringBuilder append(StringBuilder buf,
                   int n)

Appends n spaces to a StringBuilder.

append

public static StringBuffer append(StringBuffer buf,
                  int n)

Appends n spaces to a StringBuffer.

padRight

public static String padRight(String string,
              int n)

Returns a string that is padded on the right with spaces to the given length.

padLeft

public static String padLeft(String string,
             int n)

Returns a string that is padded on the left with spaces to the given length.