2003-02-19 Michael Koch <konqueror@gmx.de>

	* gnu/java/nio/ByteBufferImpl.java
	(ByteBufferImpl): Renamed two variables.
	* gnu/java/nio/CharBufferImpl.java
	(CharBufferImpl): Renamed two variables.
	* gnu/java/nio/DoubleBufferImpl.java
	(DoubleBufferImpl): Renamed two variables.
	* gnu/java/nio/FloatBufferImpl.java
	(FloatBufferImpl): Renamed two variables.
	* gnu/java/nio/IntBufferImpl.java
	(IntBufferImpl): Renamed two variables.
	* gnu/java/nio/LongBufferImpl.java
	(LongBufferImpl): Renamed two variables.
	* gnu/java/nio/ShortBufferImpl.java
	(ShortBufferImpl): Renamed two variables.
	* java/nio/CharBuffer.java
	(wrap): Fixed arguments to CharBufferImpl constructor.
	(hasArray): Only not read-only buffers have backing arrays.
	(length): Documentation added.
	(subSequence): Documentation added.
	* java/nio/DoubleBuffer.java
	(hasArray): Only not read-only buffers have backing arrays.
	* java/nio/FloatBuffer.java
	(hasArray): Only not read-only buffers have backing arrays.
	* java/nio/IntBuffer.java
	(hasArray): Only not read-only buffers have backing arrays.
	* java/nio/LongBuffer.java
	(hasArray): Only not read-only buffers have backing arrays.
	* java/nio/ShortBuffer.java
	(hasArray): Only not read-only buffers have backing arrays.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@63101 138bc75d-0d04-0410-961f-82ee72b054a4

6 files changed, 19 insertions, 7 deletions

diff --git a/libjava/java/nio/CharBuffer.java b/libjava/java/nio/CharBuffer.java
index 9d61be90b04..e2996023047 100644
--- a/libjava/java/nio/CharBuffer.java
+++ b/libjava/java/nio/CharBuffer.java
@@ -63,7 +63,7 @@ public abstract class CharBuffer extends Buffer
    */
   final public static CharBuffer wrap (char[] array, int offset, int length)
   {
-    return new CharBufferImpl (array, offset, offset + length);
+    return new CharBufferImpl (array, offset, length);
   }
   
   /**
@@ -205,7 +205,8 @@ public abstract class CharBuffer extends Buffer
    */
   public final boolean hasArray ()
   {
-    return backing_buffer != null;
+    return (backing_buffer != null
+            && ! isReadOnly ());
   }
 
   /**
@@ -359,6 +360,9 @@ public abstract class CharBuffer extends Buffer
     return new String (array (), position (), length ());
   }
 
+  /**
+   * Returns the length of the remaining chars in this buffer.
+   */
   public final int length ()
   { 
     return remaining ();
@@ -370,6 +374,9 @@ public abstract class CharBuffer extends Buffer
   public abstract ByteOrder order ();
 
   /**
+   * Creates a new character buffer that represents the specified subsequence
+   * of this buffer, relative to the current position.
+   *
    * @exception IndexOutOfBoundsException If the preconditions on start and
    * end do not hold.
    */
diff --git a/libjava/java/nio/DoubleBuffer.java b/libjava/java/nio/DoubleBuffer.java
index 036579a802b..27f3a16d34e 100644
--- a/libjava/java/nio/DoubleBuffer.java
+++ b/libjava/java/nio/DoubleBuffer.java
@@ -120,7 +120,8 @@ public abstract class DoubleBuffer extends Buffer implements Comparable
 
   public final boolean hasArray()
   {
-    return (backing_buffer != null);
+    return (backing_buffer != null
+            && !isReadOnly ());
   }
 
   public final double[] array()
diff --git a/libjava/java/nio/FloatBuffer.java b/libjava/java/nio/FloatBuffer.java
index 8531cb99f9d..16c92d61023 100644
--- a/libjava/java/nio/FloatBuffer.java
+++ b/libjava/java/nio/FloatBuffer.java
@@ -121,7 +121,8 @@ public abstract class FloatBuffer extends Buffer implements Comparable
 
   public final boolean hasArray()
   {
-    return (backing_buffer != null);
+    return (backing_buffer != null
+            && !isReadOnly ());
   }
 
   public final float[] array()
diff --git a/libjava/java/nio/IntBuffer.java b/libjava/java/nio/IntBuffer.java
index ddf03d8364d..18e353b2013 100644
--- a/libjava/java/nio/IntBuffer.java
+++ b/libjava/java/nio/IntBuffer.java
@@ -121,7 +121,8 @@ public abstract class IntBuffer extends Buffer implements Comparable
 
   public final boolean hasArray()
   {
-    return (backing_buffer != null);
+    return (backing_buffer != null
+            && !isReadOnly ());
   }
 
   public final int[] array()
diff --git a/libjava/java/nio/LongBuffer.java b/libjava/java/nio/LongBuffer.java
index 63eb5af1a11..8b737194d0c 100644
--- a/libjava/java/nio/LongBuffer.java
+++ b/libjava/java/nio/LongBuffer.java
@@ -121,7 +121,8 @@ public abstract class LongBuffer extends Buffer implements Comparable
 
   public final boolean hasArray()
   {
-    return (backing_buffer != null);
+    return (backing_buffer != null
+            && !isReadOnly ());
   }
 
   public final long[] array()
diff --git a/libjava/java/nio/ShortBuffer.java b/libjava/java/nio/ShortBuffer.java
index 7a71cad6d85..8c5915dc148 100644
--- a/libjava/java/nio/ShortBuffer.java
+++ b/libjava/java/nio/ShortBuffer.java
@@ -121,7 +121,8 @@ public abstract class ShortBuffer extends Buffer implements Comparable
 
   public final boolean hasArray()
   {
-    return (backing_buffer != null);
+    return (backing_buffer != null
+            && !isReadOnly ());
   }
 
   public final short[] array()