44 |
import java.lang.reflect.InvocationTargetException; |
import java.lang.reflect.InvocationTargetException; |
45 |
import java.lang.reflect.Member; |
import java.lang.reflect.Member; |
46 |
import java.lang.reflect.Method; |
import java.lang.reflect.Method; |
47 |
|
import java.lang.reflect.Modifier; |
48 |
import java.net.URL; |
import java.net.URL; |
49 |
import java.security.AllPermission; |
import java.security.AllPermission; |
50 |
import java.security.Permissions; |
import java.security.Permissions; |
51 |
import java.security.ProtectionDomain; |
import java.security.ProtectionDomain; |
52 |
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import java.security.AccessController; |
53 |
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import java.security.PrivilegedAction; |
54 |
import java.util.ArrayList; |
import java.util.ArrayList; |
55 |
import java.util.Arrays; |
import java.util.Arrays; |
56 |
import java.util.HashMap; |
import java.util.HashMap; |
112 |
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|
113 |
transient final VMClass vmClass; |
transient final VMClass vmClass; |
114 |
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|
115 |
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/** newInstance() caches the default constructor */ |
116 |
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private transient Constructor constructor; |
117 |
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|
118 |
/** |
/** |
119 |
* Class is non-instantiable from Java code; only the VM can create |
* Class is non-instantiable from Java code; only the VM can create |
120 |
* instances of this class. |
* instances of this class. |
239 |
public Object newInstance() |
public Object newInstance() |
240 |
throws InstantiationException, IllegalAccessException |
throws InstantiationException, IllegalAccessException |
241 |
{ |
{ |
242 |
try |
memberAccessCheck(Member.PUBLIC); |
243 |
|
Constructor constructor; |
244 |
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synchronized(this) |
245 |
{ |
{ |
246 |
return getConstructor(null).newInstance(null); |
constructor = this.constructor; |
247 |
} |
} |
248 |
catch (IllegalArgumentException e) |
if (constructor == null) |
249 |
{ |
{ |
250 |
throw (Error) new InternalError("Should not happen").initCause(e); |
Constructor[] constructors = getDeclaredConstructors(false); |
251 |
|
for (int i = 0; i < constructors.length; i++) |
252 |
|
{ |
253 |
|
if (constructors[i].getParameterTypes().length == 0) |
254 |
|
{ |
255 |
|
constructor = constructors[i]; |
256 |
|
break; |
257 |
|
} |
258 |
|
} |
259 |
|
if (constructor == null) |
260 |
|
throw new InstantiationException(getName()); |
261 |
} |
} |
262 |
catch (InvocationTargetException e) |
int modifiers = constructor.getModifiers(); |
263 |
|
if (!Modifier.isPublic(modifiers)) |
264 |
{ |
{ |
265 |
throw (InstantiationException) |
Class caller = VMSecurityManager.getClassContext()[1]; |
266 |
new InstantiationException(e.toString()).initCause(e); |
if (caller != this && |
267 |
|
(Modifier.isPrivate(modifiers) || getClassLoader() != caller.getClassLoader() || |
268 |
|
!ClassHelper.getPackagePortion(getName()).equals(ClassHelper.getPackagePortion(caller.getName())))) |
269 |
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throw new IllegalAccessException(getName() + " has an inaccessible constructor"); |
270 |
|
if (!constructor.isAccessible()) |
271 |
|
{ |
272 |
|
final Constructor finalConstructor = constructor; |
273 |
|
AccessController.doPrivileged(new PrivilegedAction() { |
274 |
|
public Object run() { |
275 |
|
finalConstructor.setAccessible(true); |
276 |
|
return null; |
277 |
|
} |
278 |
|
}); |
279 |
|
synchronized(this) |
280 |
|
{ |
281 |
|
if (this.constructor == null) |
282 |
|
this.constructor = constructor; |
283 |
|
} |
284 |
|
} |
285 |
} |
} |
286 |
catch (NoSuchMethodException e) |
try |
287 |
|
{ |
288 |
|
return constructor.newInstance(null); |
289 |
|
} |
290 |
|
catch (InvocationTargetException e) |
291 |
{ |
{ |
292 |
throw (InstantiationException) |
VMClass.throwException(e.getTargetException()); |
293 |
new InstantiationException(e.toString()).initCause(e); |
throw (InternalError) new InternalError("VMClass.throwException returned").initCause(e); |
294 |
} |
} |
295 |
} |
} |
296 |
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|