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This commit is contained in:
Kumar Srinivasan 2010-10-12 12:20:44 -07:00
commit 6de8a21e10
1 changed files with 16 additions and 13 deletions
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29
jdk/src/share/classes/sun/net/www/MimeTable.java
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@ -73,29 +73,32 @@ public class MimeTable implements FileNameMap {
private static final String filePreamble = "sun.net.www MIME content-types table";
private static final String fileMagic = "#" + filePreamble;
private static MimeTable defaultInstance = null;
MimeTable() {
load();
}
private static class DefaultInstanceHolder {
static final MimeTable defaultInstance = getDefaultInstance();
static MimeTable getDefaultInstance() {
return java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<MimeTable>() {
public MimeTable run() {
MimeTable instance = new MimeTable();
URLConnection.setFileNameMap(instance);
return instance;
}
});
}
}
/**
* Get the single instance of this class. First use will load the
* table from a data file.
*/
public static MimeTable getDefaultTable() {
if (defaultInstance == null) {
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<Void>() {
public Void run() {
defaultInstance = new MimeTable();
URLConnection.setFileNameMap(defaultInstance);
return null;
}
});
}
return defaultInstance;
return DefaultInstanceHolder.defaultInstance;
}
/**