966 * @throws IndexOutOfBoundsException
967 * If either {@code off} or {@code len} is negative, or if
968 * {@code off+len} is greater than {@code b.length}.
969 *
970 * @throws SecurityException
971 * If an attempt is made to add this class to a package that
972 * contains classes that were signed by a different set of
973 * certificates than this class, or if {@code name} begins with
974 * "{@code java.}" and this class loader is not the platform
975 * class loader or its ancestor.
976 *
977 * @revised 9
978 * @spec JPMS
979 */
980 protected final Class<?> defineClass(String name, byte[] b, int off, int len,
981 ProtectionDomain protectionDomain)
982 throws ClassFormatError
983 {
984 protectionDomain = preDefineClass(name, protectionDomain);
985 String source = defineClassSourceLocation(protectionDomain);
986 Class<?> c = defineClass1(name, b, off, len, protectionDomain, source);
987 postDefineClass(c, protectionDomain);
988 return c;
989 }
990
991 /**
992 * Converts a {@link java.nio.ByteBuffer ByteBuffer} into an instance
993 * of class {@code Class}, with the given {@code ProtectionDomain}.
994 * If the given {@code ProtectionDomain} is {@code null}, then a default
995 * protection domain will be assigned to the class as
996 * specified in the documentation for {@link #defineClass(String, byte[],
997 * int, int)}. Before the class can be used it must be resolved.
998 *
999 * <p>The rules about the first class defined in a package determining the
1000 * set of certificates for the package, the restrictions on class names,
1001 * and the defined package of the class
1002 * are identical to those specified in the documentation for {@link
1003 * #defineClass(String, byte[], int, int, ProtectionDomain)}.
1004 *
1005 * <p> An invocation of this method of the form
1006 * <i>cl</i>{@code .defineClass(}<i>name</i>{@code ,}
1058 throws ClassFormatError
1059 {
1060 int len = b.remaining();
1061
1062 // Use byte[] if not a direct ByteBuffer:
1063 if (!b.isDirect()) {
1064 if (b.hasArray()) {
1065 return defineClass(name, b.array(),
1066 b.position() + b.arrayOffset(), len,
1067 protectionDomain);
1068 } else {
1069 // no array, or read-only array
1070 byte[] tb = new byte[len];
1071 b.get(tb); // get bytes out of byte buffer.
1072 return defineClass(name, tb, 0, len, protectionDomain);
1073 }
1074 }
1075
1076 protectionDomain = preDefineClass(name, protectionDomain);
1077 String source = defineClassSourceLocation(protectionDomain);
1078 Class<?> c = defineClass2(name, b, b.position(), len, protectionDomain, source);
1079 postDefineClass(c, protectionDomain);
1080 return c;
1081 }
1082
1083 private native Class<?> defineClass1(String name, byte[] b, int off, int len,
1084 ProtectionDomain pd, String source);
1085
1086 private native Class<?> defineClass2(String name, java.nio.ByteBuffer b,
1087 int off, int len, ProtectionDomain pd,
1088 String source);
1089
1090 // true if the name is null or has the potential to be a valid binary name
1091 private boolean checkName(String name) {
1092 if ((name == null) || (name.length() == 0))
1093 return true;
1094 if ((name.indexOf('/') != -1) || (name.charAt(0) == '['))
1095 return false;
1096 return true;
1097 }
1098
1099 private void checkCerts(String name, CodeSource cs) {
1100 int i = name.lastIndexOf('.');
1101 String pname = (i == -1) ? "" : name.substring(0, i);
1102
1103 Certificate[] certs = null;
1104 if (cs != null) {
1105 certs = cs.getCertificates();
1106 }
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966 * @throws IndexOutOfBoundsException
967 * If either {@code off} or {@code len} is negative, or if
968 * {@code off+len} is greater than {@code b.length}.
969 *
970 * @throws SecurityException
971 * If an attempt is made to add this class to a package that
972 * contains classes that were signed by a different set of
973 * certificates than this class, or if {@code name} begins with
974 * "{@code java.}" and this class loader is not the platform
975 * class loader or its ancestor.
976 *
977 * @revised 9
978 * @spec JPMS
979 */
980 protected final Class<?> defineClass(String name, byte[] b, int off, int len,
981 ProtectionDomain protectionDomain)
982 throws ClassFormatError
983 {
984 protectionDomain = preDefineClass(name, protectionDomain);
985 String source = defineClassSourceLocation(protectionDomain);
986 Class<?> c = defineClass1(this, name, b, off, len, protectionDomain, source);
987 postDefineClass(c, protectionDomain);
988 return c;
989 }
990
991 /**
992 * Converts a {@link java.nio.ByteBuffer ByteBuffer} into an instance
993 * of class {@code Class}, with the given {@code ProtectionDomain}.
994 * If the given {@code ProtectionDomain} is {@code null}, then a default
995 * protection domain will be assigned to the class as
996 * specified in the documentation for {@link #defineClass(String, byte[],
997 * int, int)}. Before the class can be used it must be resolved.
998 *
999 * <p>The rules about the first class defined in a package determining the
1000 * set of certificates for the package, the restrictions on class names,
1001 * and the defined package of the class
1002 * are identical to those specified in the documentation for {@link
1003 * #defineClass(String, byte[], int, int, ProtectionDomain)}.
1004 *
1005 * <p> An invocation of this method of the form
1006 * <i>cl</i>{@code .defineClass(}<i>name</i>{@code ,}
1058 throws ClassFormatError
1059 {
1060 int len = b.remaining();
1061
1062 // Use byte[] if not a direct ByteBuffer:
1063 if (!b.isDirect()) {
1064 if (b.hasArray()) {
1065 return defineClass(name, b.array(),
1066 b.position() + b.arrayOffset(), len,
1067 protectionDomain);
1068 } else {
1069 // no array, or read-only array
1070 byte[] tb = new byte[len];
1071 b.get(tb); // get bytes out of byte buffer.
1072 return defineClass(name, tb, 0, len, protectionDomain);
1073 }
1074 }
1075
1076 protectionDomain = preDefineClass(name, protectionDomain);
1077 String source = defineClassSourceLocation(protectionDomain);
1078 Class<?> c = defineClass2(this, name, b, b.position(), len, protectionDomain, source);
1079 postDefineClass(c, protectionDomain);
1080 return c;
1081 }
1082
1083 static native Class<?> defineClass1(ClassLoader loader, String name, byte[] b, int off, int len,
1084 ProtectionDomain pd, String source);
1085
1086 static native Class<?> defineClass2(ClassLoader loader, String name, java.nio.ByteBuffer b,
1087 int off, int len, ProtectionDomain pd,
1088 String source);
1089
1090 // true if the name is null or has the potential to be a valid binary name
1091 private boolean checkName(String name) {
1092 if ((name == null) || (name.length() == 0))
1093 return true;
1094 if ((name.indexOf('/') != -1) || (name.charAt(0) == '['))
1095 return false;
1096 return true;
1097 }
1098
1099 private void checkCerts(String name, CodeSource cs) {
1100 int i = name.lastIndexOf('.');
1101 String pname = (i == -1) ? "" : name.substring(0, i);
1102
1103 Certificate[] certs = null;
1104 if (cs != null) {
1105 certs = cs.getCertificates();
1106 }
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