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java.lang.Objectorg.apache.hadoop.hbase.util.Strings
@InterfaceAudience.Public @InterfaceStability.Stable public class Strings
Utility for Strings.
| Field Summary | |
|---|---|
static String |
DEFAULT_KEYVALUE_SEPARATOR
|
static String |
DEFAULT_SEPARATOR
|
| Constructor Summary | |
|---|---|
Strings()
|
|
| Method Summary | |
|---|---|
static StringBuilder |
appendKeyValue(StringBuilder sb,
String key,
Object value)
Append to a StringBuilder a key/value. |
static StringBuilder |
appendKeyValue(StringBuilder sb,
String key,
Object value,
String separator,
String keyValueSeparator)
Append to a StringBuilder a key/value. |
static String |
domainNamePointerToHostName(String dnPtr)
Given a PTR string generated via reverse DNS lookup, return everything except the trailing period. |
static boolean |
isEmpty(String input)
Null-safe length check. |
static String |
padFront(String input,
char padding,
int length)
Push the input string to the right by appending a character before it, usually a space. |
static String |
repeat(char c,
int reapeatFor)
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
public static final String DEFAULT_SEPARATOR
public static final String DEFAULT_KEYVALUE_SEPARATOR
| Constructor Detail |
|---|
public Strings()
| Method Detail |
|---|
public static StringBuilder appendKeyValue(StringBuilder sb,
String key,
Object value)
sb - StringBuilder to usekey - Key to append.value - Value to append.
sb populated with key/value.
public static StringBuilder appendKeyValue(StringBuilder sb,
String key,
Object value,
String separator,
String keyValueSeparator)
sb - StringBuilder to usekey - Key to append.value - Value to append.separator - Value to use between key and value.keyValueSeparator - Value to use between key/value sets.
sb populated with key/value.public static String domainNamePointerToHostName(String dnPtr)
dnPtr - a domain name pointer (PTR) string.
public static boolean isEmpty(String input)
input -
public static String padFront(String input,
char padding,
int length)
input - the string to padpadding - the character to repeat to the left of the input stringlength - the desired total length including the padding
public static String repeat(char c,
int reapeatFor)
c - repeat this characterreapeatFor - the length of the output String
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