Package org.apache.jackrabbit.oak.commons

Class StringUtils

  • public class StringUtils
extends java.lang.Object
    Some string utility methods.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static @NotNull java.lang.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 java.lang.String s)
      Convert a hex encoded string to a byte array.
      static java.lang.String emptyToNull​(@Nullable java.lang.String string)
      Returns the string if it is not empty, or null otherwise.
      static int estimateMemoryUsage​(java.lang.String s)
      Estimates the memory usage of the given string.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • convertBytesToHex

        @NotNull
public static @NotNull java.lang.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 java.lang.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​(java.lang.String s)
        Estimates the memory usage of the given string.
        Parameters:
        s - the string to estimate.
        Returns:
        the estimated memory usage.

      • emptyToNull

        public static java.lang.String emptyToNull​(@Nullable
                                           @Nullable java.lang.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