src/java.base/share/classes/jdk/internal/misc/JavaLangAccess.java

*** 28,37 ****
--- 28,38 ----
  import java.lang.annotation.Annotation;
  import java.lang.module.ModuleDescriptor;
  import java.lang.reflect.Executable;
  import java.lang.reflect.Method;
  import java.net.URI;
+ import java.nio.charset.Charset;
  import java.security.AccessControlContext;
  import java.security.ProtectionDomain;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
*** 254,263 ****
--- 255,294 ----
       * given class loader.
       */
      Stream<ModuleLayer> layers(ClassLoader loader);
  
      /**
+      * Constructs a new {@code String} by decoding the specified subarray of
+      * bytes using the specified {@linkplain java.nio.charset.Charset charset}.
+      *
+      * The caller of this method shall relinquish and transfer the ownership of
+      * the byte array to the callee since the later will not make a copy.
+      *
+      * @param bytes the byte array source
+      * @param cs the Charset
+      * @return the newly created string
+      * @throws IllegalArgumentException for malformed or unmappable bytes
+      */
+     String newStringNoRepl(byte[] bytes, Charset cs);
+ 
+     /**
+      * Encode the given string into a sequence of bytes using the specified Charset.
+      *
+      * This method avoids copying the String's internal representation if the input
+      * is ASCII.
+      *
+      * This method throws IllegalArgumentException instead of replacing when
+      * malformed input or unmappable characters are encountered.
+      *
+      * @param s the string to encode
+      * @param cs the charset
+      * @return the encoded bytes
+      * @throws IllegalArgumentException for malformed input or unmappable characters
+      */
+     byte[] getBytesNoRepl(String s, Charset cs);
+ 
+     /**
       * Returns a new string by decoding from the given utf8 bytes array.
       *
       * @param off the index of the first byte to decode
       * @param len the number of bytes to decode
       * @return the newly created string