8298971: Move Console implementation into jdk internal package

Reviewed-by: jpai

src/java.base/share/classes/java/io/Console.java

@@ -31,6 +31,7 @@ import java.util.*;
 import java.nio.charset.Charset;
 import jdk.internal.access.JavaIOAccess;
 import jdk.internal.access.SharedSecrets;
+import jdk.internal.io.JdkConsoleImpl;
 import jdk.internal.io.JdkConsoleProvider;
 import jdk.internal.util.StaticProperty;
 import sun.security.action.GetPropertyAction;
@@ -93,7 +94,7 @@ import sun.security.action.GetPropertyAction;
  * @author  Xueming Shen
  * @since   1.6
  */
-public sealed class Console implements Flushable permits ConsoleImpl, ProxyingConsole {
+public sealed class Console implements Flushable permits ProxyingConsole {
     /**
      * Package private no-arg constructor.
      */
@@ -380,6 +381,8 @@ public sealed class Console implements Flushable permits ConsoleImpl, ProxyingCo
 
     @SuppressWarnings("removal")
     private static Console instantiateConsole(boolean istty) {
+        Console c;
+
         try {
             // Try loading providers
             PrivilegedAction<Console> pa = () -> {
@@ -392,13 +395,19 @@ public sealed class Console implements Flushable permits ConsoleImpl, ProxyingCo
                         .filter(Objects::nonNull)
                         .findAny()
                         .map(jc -> (Console) new ProxyingConsole(jc))
-                        .orElse(istty ? new ConsoleImpl() : null);
+                        .orElse(null);
             };
-            return AccessController.doPrivileged(pa);
+            c = AccessController.doPrivileged(pa);
         } catch (ServiceConfigurationError ignore) {
-            // default to built-in Console
-            return istty ? new ConsoleImpl() : null;
+            c = null;
         }
+
+        // If not found, default to built-in Console
+        if (istty && c == null) {
+            c = new ProxyingConsole(new JdkConsoleImpl(CHARSET));
+        }
+
+        return c;
     }
 
     private static final Console cons;

src/java.base/share/classes/jdk/internal/io/JdkConsoleImpl.java

@@ -23,55 +23,50 @@
  * questions.
  */
 
-package java.io;
+package jdk.internal.io;
 
-import java.util.*;
+import java.io.IOError;
+import java.io.IOException;
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+import java.io.Reader;
+import java.io.Writer;
 import java.nio.charset.Charset;
+import java.util.Arrays;
+import java.util.Formatter;
+import java.util.Objects;
+
 import jdk.internal.access.SharedSecrets;
 import sun.nio.cs.StreamDecoder;
 import sun.nio.cs.StreamEncoder;
 
 /**
- * Console implementation based on the platform's TTY.
+ * JdkConsole implementation based on the platform's TTY.
  */
-
-final class ConsoleImpl extends Console {
-    /**
-     * {@inheritDoc}
-     */
+public final class JdkConsoleImpl implements JdkConsole {
     @Override
     public PrintWriter writer() {
         return pw;
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public Reader reader() {
         return reader;
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
-    public Console format(String fmt, Object ...args) {
+    public JdkConsole format(String fmt, Object ... args) {
         formatter.format(fmt, args).flush();
         return this;
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
-    public Console printf(String format, Object ... args) {
+    public JdkConsole printf(String format, Object ... args) {
         return format(format, args);
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public String readLine(String fmt, Object ... args) {
         String line = null;
@@ -91,17 +86,11 @@ final class ConsoleImpl extends Console {
         return line;
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public String readLine() {
         return readLine("");
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public char[] readPassword(String fmt, Object ... args) {
         char[] passwd = null;
@@ -164,31 +153,22 @@ final class ConsoleImpl extends Console {
         shutdownHookInstalled = true;
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public char[] readPassword() {
         return readPassword("");
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public void flush() {
         pw.flush();
     }
 
-    /**
-     * {@inheritDoc}
-     */
     @Override
     public Charset charset() {
-        assert CHARSET != null : "charset() should not return null";
-        return CHARSET;
+        return charset;
     }
 
+    private final Charset charset;
     private final Object readLock;
     private final Object writeLock;
     private final Reader reader;
@@ -348,19 +328,24 @@ final class ConsoleImpl extends Console {
         }
     }
 
-    ConsoleImpl() {
+    public JdkConsoleImpl(Charset charset) {
+        Objects.requireNonNull(charset);
+        this.charset = charset;
         readLock = new Object();
         writeLock = new Object();
         out = StreamEncoder.forOutputStreamWriter(
                 new FileOutputStream(FileDescriptor.out),
                 writeLock,
-                CHARSET);
-        pw = new PrintWriter(out, true) { public void close() {} };
+                charset);
+        pw = new PrintWriter(out, true) {
+            public void close() {
+            }
+        };
         formatter = new Formatter(out);
         reader = new LineReader(StreamDecoder.forInputStreamReader(
                 new FileInputStream(FileDescriptor.in),
                 readLock,
-                CHARSET));
+                charset));
         rcb = new char[1024];
     }
 }