Class SecretString

  • All Implemented Interfaces:
    java.lang.AutoCloseable, java.lang.CharSequence

    public class SecretString
    extends java.lang.Object
    implements java.lang.CharSequence, java.lang.AutoCloseable
    This class implements a CharSequence that can be cleared of it's contained characters. This class is utilized to pass around secrets (passwords) instead of a String instance.
    • Constructor Summary

      Constructors 
      Constructor Description
      SecretString​(char[] chars)  
      SecretString​(char[] chars, int start, int end)  
      SecretString​(java.lang.CharSequence charSequence)  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      char charAt​(int index)  
      void clear()
      Clear the contents of this SecretString instance by setting each character to 0.
      void close()  
      void finalize()  
      int length()  
      java.lang.CharSequence subSequence​(int start, int end)  
      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
      • Methods inherited from interface java.lang.CharSequence

        chars, codePoints, toString
    • Constructor Detail

      • SecretString

        public SecretString​(java.lang.CharSequence charSequence)
      • SecretString

        public SecretString​(char[] chars)
      • SecretString

        public SecretString​(char[] chars,
                            int start,
                            int end)
    • Method Detail

      • charAt

        public char charAt​(int index)
        Specified by:
        charAt in interface java.lang.CharSequence
      • close

        public void close()
        Specified by:
        close in interface java.lang.AutoCloseable
      • length

        public int length()
        Specified by:
        length in interface java.lang.CharSequence
      • subSequence

        public java.lang.CharSequence subSequence​(int start,
                                                  int end)
        Specified by:
        subSequence in interface java.lang.CharSequence
      • clear

        public void clear()
        Clear the contents of this SecretString instance by setting each character to 0. This is automatically done in the finalize() method.
      • finalize

        public void finalize()
                      throws java.lang.Throwable
        Overrides:
        finalize in class java.lang.Object
        Throws:
        java.lang.Throwable