Package org.apache.jackrabbit.oak.commons

Class StringUtils

java.lang.Object

org.apache.jackrabbit.oak.commons.StringUtils

public class StringUtils
extends Object

Some string utility methods.

Method Summary

Modifier and Type	Method	Description
static @NotNull String	convertBytesToHex(@org.jetbrains.annotations.NotNull byte[] value)	Convert a byte array to a hex encoded string.
static @org.jetbrains.annotations.NotNull byte[]	convertHexToBytes(@NotNull String s)	Convert a hex encoded string to a byte array.
static String	emptyToNull(@Nullable String string)	Returns the string if it is not empty, or null otherwise.
static int	estimateMemoryUsage(String s)	Estimates the memory usage of the given string.

Methods inherited from class java.lang.Object

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

Method Detail

convertBytesToHex

@NotNull
public static @NotNull String convertBytesToHex(@NotNull
                                                @org.jetbrains.annotations.NotNull byte[] value)

Convert a byte array to a hex encoded string.

Parameters:

value - the byte array

Returns:

the hex encoded string

convertHexToBytes

@NotNull
public static @org.jetbrains.annotations.NotNull byte[] convertHexToBytes(@NotNull
                                                                          @NotNull String s)

Convert a hex encoded string to a byte array.

Parameters:

s - the hex encoded string

Returns:

the byte array

estimateMemoryUsage

public static int estimateMemoryUsage(String s)

Estimates the memory usage of the given string.

Parameters:

s - the string to estimate.

Returns:

the estimated memory usage.

emptyToNull

public static String emptyToNull(@Nullable
                                 @Nullable String string)

Returns the string if it is not empty, or null otherwise.

Parameters:

string - the string to test and possibly return, may be null

Returns:

the input string if it is not empty, or null if the input string is null or empty