123 * @see SecurityManager#checkPermission
124 * @see java.lang.RuntimePermission
125 */
126 public void setAccessible(boolean flag) throws SecurityException {
127 SecurityManager sm = System.getSecurityManager();
128 if (sm != null) sm.checkPermission(ACCESS_PERMISSION);
129 setAccessible0(this, flag);
130 }
131
132 /* Check that you aren't exposing java.lang.Class.<init> or sensitive
133 fields in java.lang.Class. */
134 private static void setAccessible0(AccessibleObject obj, boolean flag)
135 throws SecurityException
136 {
137 if (obj instanceof Constructor && flag == true) {
138 Constructor<?> c = (Constructor<?>)obj;
139 if (c.getDeclaringClass() == Class.class) {
140 throw new SecurityException("Cannot make a java.lang.Class" +
141 " constructor accessible");
142 }
143 } else if (obj instanceof Field && flag == true) {
144 Field f = (Field)obj;
145 if (f.getDeclaringClass() == Class.class &&
146 f.getName().equals("classLoader")) {
147 throw new SecurityException("Cannot make java.lang.Class.classLoader" +
148 " accessible");
149 }
150 }
151 obj.override = flag;
152 }
153
154 /**
155 * Get the value of the {@code accessible} flag for this object.
156 *
157 * @return the value of the object's {@code accessible} flag
158 */
159 public boolean isAccessible() {
160 return override;
161 }
162
163 /**
164 * Constructor: only used by the Java Virtual Machine.
165 */
166 protected AccessibleObject() {}
167
168 // Indicates whether language-level access checks are overridden
169 // by this object. Initializes to "false". This field is used by
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123 * @see SecurityManager#checkPermission
124 * @see java.lang.RuntimePermission
125 */
126 public void setAccessible(boolean flag) throws SecurityException {
127 SecurityManager sm = System.getSecurityManager();
128 if (sm != null) sm.checkPermission(ACCESS_PERMISSION);
129 setAccessible0(this, flag);
130 }
131
132 /* Check that you aren't exposing java.lang.Class.<init> or sensitive
133 fields in java.lang.Class. */
134 private static void setAccessible0(AccessibleObject obj, boolean flag)
135 throws SecurityException
136 {
137 if (obj instanceof Constructor && flag == true) {
138 Constructor<?> c = (Constructor<?>)obj;
139 if (c.getDeclaringClass() == Class.class) {
140 throw new SecurityException("Cannot make a java.lang.Class" +
141 " constructor accessible");
142 }
143 }
144 obj.override = flag;
145 }
146
147 /**
148 * Get the value of the {@code accessible} flag for this object.
149 *
150 * @return the value of the object's {@code accessible} flag
151 */
152 public boolean isAccessible() {
153 return override;
154 }
155
156 /**
157 * Constructor: only used by the Java Virtual Machine.
158 */
159 protected AccessibleObject() {}
160
161 // Indicates whether language-level access checks are overridden
162 // by this object. Initializes to "false". This field is used by
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