Minor changes to java.io in the Java 2 Platform v1.2 - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

Minor changes to java.io in the JavaTM 2 Platform v1.2

JDKTM Contents

The following changes to package java.io were introduced in version 1.2 of the Java^TM 2 Platform. Minor changes to this package were:

• The out field of the PrintWriter class is now protected rather than private, so that subclasses may access it
• The RandomAccessFile class supports a new setLength method; and
• The StringWriter(int) constructor is now public.

In the Java 2 Platform, the following constructors check for null input parameters:

• The constructors PrintStream(OutputStream out) and PrintStream(OutputStream out, boolean autoFlush) will throw a NullPointerException if the parameter out is null.

• The constructors InputStreamReader(InputStream in) and InputStreamReader(InputStream in, String enc) will throw a NullPointerException if the in parameter is null.

• The constructors OutputStreamWriter(OutputStream out) and OutputStreamWriter(OutputStream out, String enc) will throw a NullPointerException if the out parameter is null.

• The protected constructors Reader(Object lock) and Writer(Object lock) now throw NullPointerException if the lock parameter is null.

Copyright © 1999 Sun Microsystems, Inc. All Rights Reserved.

Java Software