diff options
Diffstat (limited to 'libjava/gnu/java/io')
| -rw-r--r-- | libjava/gnu/java/io/ClassLoaderObjectInputStream.java | 59 | ||||
| -rw-r--r-- | libjava/gnu/java/io/NullOutputStream.java | 45 | ||||
| -rw-r--r-- | libjava/gnu/java/io/ObjectIdentityWrapper.java | 89 |
3 files changed, 193 insertions, 0 deletions
diff --git a/libjava/gnu/java/io/ClassLoaderObjectInputStream.java b/libjava/gnu/java/io/ClassLoaderObjectInputStream.java new file mode 100644 index 00000000000..76e1f058f1d --- /dev/null +++ b/libjava/gnu/java/io/ClassLoaderObjectInputStream.java @@ -0,0 +1,59 @@ +/* gnu.java.io.ClassLoaderObjectInputStream + Copyright (C) 1998 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + + +package gnu.java.io; + +import java.io.*; + +/** + * ClassLoaderObjectInputStream is ObjectInputStream, with + * the ability to use a specific ClassLoader. + * + * @author Geoff Berry + * @version 1.1.0, 29 Jul 1998 + */ + +public class ClassLoaderObjectInputStream extends ObjectInputStream { + ClassLoader myClassLoader; + + /** Create the new ClassLoaderObjectInputStream. + * @param in the InputStream to read the Objects from. + * @param myClassLoader the ClassLoader to load classes + * with. + */ + public ClassLoaderObjectInputStream(InputStream in, ClassLoader myClassLoader) throws IOException,StreamCorruptedException { + super(in); + this.myClassLoader = myClassLoader; + } + + /** Overriden method to use the loadClass() method from + * the ClassLoader. + */ + public Class resolveClass(String name) throws IOException, ClassNotFoundException { + return myClassLoader.loadClass(name); + } +} diff --git a/libjava/gnu/java/io/NullOutputStream.java b/libjava/gnu/java/io/NullOutputStream.java new file mode 100644 index 00000000000..caf8ade2fbc --- /dev/null +++ b/libjava/gnu/java/io/NullOutputStream.java @@ -0,0 +1,45 @@ +/* NullOutputStream.java -- OutputStream that does absolutely nothing + Copyright (C) 1998 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + + +package gnu.java.io; + +import java.io.OutputStream; + +/** + This is a placeholder OutputStream that does absolutley nothing + when written to. It is intended to be used in the same manner as + /dev/null. None of this class's methods do anything at all. +*/ +public class NullOutputStream extends OutputStream +{ + public NullOutputStream() {} + public void write( int b ) {} + public void write( byte b[] ) {} + public void write( byte b[], int off, int len ) {} + public void flush() {} + public void close() {} +} diff --git a/libjava/gnu/java/io/ObjectIdentityWrapper.java b/libjava/gnu/java/io/ObjectIdentityWrapper.java new file mode 100644 index 00000000000..f06e2057ecb --- /dev/null +++ b/libjava/gnu/java/io/ObjectIdentityWrapper.java @@ -0,0 +1,89 @@ +/* ObjectIdentityWrapper.java -- Wrapper class used to override equals() + and hashCode() to be as discriminating as possible + Copyright (C) 1998 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + + +package gnu.java.io; + +/** + This class is a thin wrapper around <code>Object</code> that makes + the methods <code>hashCode()</code> and <code>equals(Object)</code> + as discriminating as possible. +*/ +public class ObjectIdentityWrapper +{ + + /** + Constructs a <code>ObjectIdentityWrapper</code> that is wrapped + around o. + */ + public ObjectIdentityWrapper( Object o ) + { + object = o; + } + + /** + Uses <code>System.identityHashCode(Object)</code> to compute a + hash code for the object wrapped by this + <code>ObjectIdentityWrapper</code>. + + @see java.lang.System#identityHashCode(java.lang.Object) + @see java.util.Hashtable + @see java.lang.Object#hashCode() + */ + public int hashCode() + { + return System.identityHashCode( object ); + } + + /** + Uses the <code>==</code> operator to test for equality between + the object wrapped by this <code>ObjectIdentityWrapper</code> and + the object wrapped by the <code>ObjectIdentityWrapper</code> o. + Returns false if o is not a <code>ObjectIdentityWrapper</code>. + + @see java.util.Hashtable + @see java.lang.Object#equals() + */ + public boolean equals( Object o ) + { + if( o instanceof ObjectIdentityWrapper ) + return object == ((ObjectIdentityWrapper)o).object; + else + return false; + } + + public String toString() + { + return "ObjectIdentityWrapper< " + object + ", " + hashCode() + " >"; + } + + /** + The <code>Object</code> wrapped by this + <code>ObjectIdentityWrapper</code>. + */ + public Object object; +} |
