Set vtable in class object to null after linking.
This is follow-up work of embedding imt and vtable for
faster interface/virtual call dispatching.
Once vtable becomes embedded, the original vtable is nulled.
(cherry picked from commit 2cdbad7c62f126581ec5177104de961c4d71adaa)
Change-Id: I6acdcd1ee560d387fb77c55c58bbe3598c197ba1
diff --git a/compiler/driver/compiler_driver-inl.h b/compiler/driver/compiler_driver-inl.h
index 99fcc26..02f4e3a 100644
--- a/compiler/driver/compiler_driver-inl.h
+++ b/compiler/driver/compiler_driver-inl.h
@@ -234,8 +234,8 @@
// the super class.
bool can_sharpen_super_based_on_type = (*invoke_type == kSuper) &&
(referrer_class != methods_class) && referrer_class->IsSubClass(methods_class) &&
- resolved_method->GetMethodIndex() < methods_class->GetVTable()->GetLength() &&
- (methods_class->GetVTable()->Get(resolved_method->GetMethodIndex()) == resolved_method);
+ resolved_method->GetMethodIndex() < methods_class->GetVTableLength() &&
+ (methods_class->GetVTableEntry(resolved_method->GetMethodIndex()) == resolved_method);
if (can_sharpen_virtual_based_on_type || can_sharpen_super_based_on_type) {
// Sharpen a virtual call into a direct call. The method_idx is into referrer's
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 1ea42bb..e0fa0f8 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -3574,9 +3574,9 @@
MethodHelper super_mh(hs.NewHandle<mirror::ArtMethod>(nullptr));
if (klass->HasSuperClass() &&
klass->GetClassLoader() != klass->GetSuperClass()->GetClassLoader()) {
- for (int i = klass->GetSuperClass()->GetVTable()->GetLength() - 1; i >= 0; --i) {
- mh.ChangeMethod(klass->GetVTable()->GetWithoutChecks(i));
- super_mh.ChangeMethod(klass->GetSuperClass()->GetVTable()->GetWithoutChecks(i));
+ for (int i = klass->GetSuperClass()->GetVTableLength() - 1; i >= 0; --i) {
+ mh.ChangeMethod(klass->GetVTableEntry(i));
+ super_mh.ChangeMethod(klass->GetSuperClass()->GetVTableEntry(i));
if (mh.GetMethod() != super_mh.GetMethod() &&
!mh.HasSameSignatureWithDifferentClassLoaders(&super_mh)) {
ThrowLinkageError(klass.Get(),
@@ -3734,10 +3734,6 @@
// This will notify waiters on new_class that saw the not yet resolved
// class in the class_table_ during EnsureResolved.
new_class_h->SetStatus(mirror::Class::kStatusResolved, self);
-
- // Only embedded imt should be used from this point.
- new_class_h->SetImTable(NULL);
- // TODO: remove vtable and only use embedded vtable.
}
return true;
}
@@ -3870,17 +3866,31 @@
bool ClassLinker::LinkVirtualMethods(Thread* self, Handle<mirror::Class> klass) {
if (klass->HasSuperClass()) {
uint32_t max_count = klass->NumVirtualMethods() +
- klass->GetSuperClass()->GetVTable()->GetLength();
- size_t actual_count = klass->GetSuperClass()->GetVTable()->GetLength();
+ klass->GetSuperClass()->GetVTableLength();
+ size_t actual_count = klass->GetSuperClass()->GetVTableLength();
CHECK_LE(actual_count, max_count);
- // TODO: do not assign to the vtable field until it is fully constructed.
StackHandleScope<3> hs(self);
- Handle<mirror::ObjectArray<mirror::ArtMethod>> vtable(
- hs.NewHandle(klass->GetSuperClass()->GetVTable()->CopyOf(self, max_count)));
- if (UNLIKELY(vtable.Get() == NULL)) {
- CHECK(self->IsExceptionPending()); // OOME.
- return false;
+ Handle<mirror::ObjectArray<mirror::ArtMethod>> vtable;
+ mirror::Class* super_class = klass->GetSuperClass();
+ if (super_class->ShouldHaveEmbeddedImtAndVTable()) {
+ vtable = hs.NewHandle(AllocArtMethodArray(self, max_count));
+ if (UNLIKELY(vtable.Get() == nullptr)) {
+ CHECK(self->IsExceptionPending()); // OOME.
+ return false;
+ }
+ int len = super_class->GetVTableLength();
+ for (int i=0; i<len; i++) {
+ vtable->Set<false>(i, super_class->GetVTableEntry(i));
+ }
+ } else {
+ CHECK(super_class->GetVTable() != nullptr) << PrettyClass(super_class);
+ vtable = hs.NewHandle(super_class->GetVTable()->CopyOf(self, max_count));
+ if (UNLIKELY(vtable.Get() == nullptr)) {
+ CHECK(self->IsExceptionPending()); // OOME.
+ return false;
+ }
}
+
// See if any of our virtual methods override the superclass.
MethodHelper local_mh(hs.NewHandle<mirror::ArtMethod>(nullptr));
MethodHelper super_mh(hs.NewHandle<mirror::ArtMethod>(nullptr));
diff --git a/runtime/class_linker_test.cc b/runtime/class_linker_test.cc
index 7b5a502..89e42da 100644
--- a/runtime/class_linker_test.cc
+++ b/runtime/class_linker_test.cc
@@ -88,7 +88,7 @@
EXPECT_EQ(0U, primitive->NumInstanceFields());
EXPECT_EQ(0U, primitive->NumStaticFields());
EXPECT_EQ(0U, primitive->NumDirectInterfaces());
- EXPECT_TRUE(primitive->GetVTable() == NULL);
+ EXPECT_FALSE(primitive->HasVTable());
EXPECT_EQ(0, primitive->GetIfTableCount());
EXPECT_TRUE(primitive->GetIfTable() == NULL);
EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
@@ -140,7 +140,7 @@
EXPECT_EQ(0U, array->NumInstanceFields());
EXPECT_EQ(0U, array->NumStaticFields());
EXPECT_EQ(2U, array->NumDirectInterfaces());
- EXPECT_TRUE(array->GetVTable() != NULL);
+ EXPECT_TRUE(array->ShouldHaveEmbeddedImtAndVTable());
EXPECT_EQ(2, array->GetIfTableCount());
ASSERT_TRUE(array->GetIfTable() != NULL);
mirror::Class* direct_interface0 = mirror::Class::GetDirectInterface(self, array, 0);
@@ -213,7 +213,7 @@
EXPECT_NE(0U, klass->NumDirectMethods());
}
}
- EXPECT_EQ(klass->IsInterface(), klass->GetVTable() == NULL);
+ EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
mirror::IfTable* iftable = klass->GetIfTable();
for (int i = 0; i < klass->GetIfTableCount(); i++) {
mirror::Class* interface = iftable->GetInterface(i);
diff --git a/runtime/entrypoints/entrypoint_utils-inl.h b/runtime/entrypoints/entrypoint_utils-inl.h
index 482ad47..bf663ee 100644
--- a/runtime/entrypoints/entrypoint_utils-inl.h
+++ b/runtime/entrypoints/entrypoint_utils-inl.h
@@ -398,26 +398,26 @@
case kDirect:
return resolved_method;
case kVirtual: {
- mirror::ObjectArray<mirror::ArtMethod>* vtable = (*this_object)->GetClass()->GetVTable();
+ mirror::Class* klass = (*this_object)->GetClass();
uint16_t vtable_index = resolved_method->GetMethodIndex();
if (access_check &&
- (vtable == nullptr || vtable_index >= static_cast<uint32_t>(vtable->GetLength()))) {
+ (!klass->HasVTable() ||
+ vtable_index >= static_cast<uint32_t>(klass->GetVTableLength()))) {
// Behavior to agree with that of the verifier.
ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(),
resolved_method->GetName(), resolved_method->GetSignature());
return nullptr; // Failure.
}
- DCHECK(vtable != nullptr);
- return vtable->GetWithoutChecks(vtable_index);
+ DCHECK(klass->HasVTable()) << PrettyClass(klass);
+ return klass->GetVTableEntry(vtable_index);
}
case kSuper: {
mirror::Class* super_class = (*referrer)->GetDeclaringClass()->GetSuperClass();
uint16_t vtable_index = resolved_method->GetMethodIndex();
- mirror::ObjectArray<mirror::ArtMethod>* vtable;
if (access_check) {
// Check existence of super class.
- vtable = (super_class != nullptr) ? super_class->GetVTable() : nullptr;
- if (vtable == nullptr || vtable_index >= static_cast<uint32_t>(vtable->GetLength())) {
+ if (super_class == nullptr || !super_class->HasVTable() ||
+ vtable_index >= static_cast<uint32_t>(super_class->GetVTableLength())) {
// Behavior to agree with that of the verifier.
ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(),
resolved_method->GetName(), resolved_method->GetSignature());
@@ -426,10 +426,9 @@
} else {
// Super class must exist.
DCHECK(super_class != nullptr);
- vtable = super_class->GetVTable();
}
- DCHECK(vtable != nullptr);
- return vtable->GetWithoutChecks(vtable_index);
+ DCHECK(super_class->HasVTable());
+ return super_class->GetVTableEntry(vtable_index);
}
case kInterface: {
uint32_t imt_index = resolved_method->GetDexMethodIndex() % mirror::Class::kImtSize;
@@ -565,11 +564,11 @@
} else if (is_direct) {
return resolved_method;
} else if (type == kSuper) {
- return referrer->GetDeclaringClass()->GetSuperClass()->GetVTable()->
- Get(resolved_method->GetMethodIndex());
+ return referrer->GetDeclaringClass()->GetSuperClass()
+ ->GetVTableEntry(resolved_method->GetMethodIndex());
} else {
DCHECK(type == kVirtual);
- return this_object->GetClass()->GetVTable()->Get(resolved_method->GetMethodIndex());
+ return this_object->GetClass()->GetVTableEntry(resolved_method->GetMethodIndex());
}
}
diff --git a/runtime/interpreter/interpreter_common.h b/runtime/interpreter/interpreter_common.h
index db42eb0..c264157 100644
--- a/runtime/interpreter/interpreter_common.h
+++ b/runtime/interpreter/interpreter_common.h
@@ -140,7 +140,8 @@
return false;
}
const uint32_t vtable_idx = (is_range) ? inst->VRegB_3rc() : inst->VRegB_35c();
- ArtMethod* const method = receiver->GetClass()->GetVTable()->GetWithoutChecks(vtable_idx);
+ CHECK(receiver->GetClass()->ShouldHaveEmbeddedImtAndVTable());
+ ArtMethod* const method = receiver->GetClass()->GetEmbeddedVTableEntry(vtable_idx);
if (UNLIKELY(method == nullptr)) {
CHECK(self->IsExceptionPending());
result->SetJ(0);
diff --git a/runtime/mirror/art_method.cc b/runtime/mirror/art_method.cc
index 1fa680d..f50fa6e 100644
--- a/runtime/mirror/art_method.cc
+++ b/runtime/mirror/art_method.cc
@@ -129,12 +129,11 @@
Class* declaring_class = GetDeclaringClass();
Class* super_class = declaring_class->GetSuperClass();
uint16_t method_index = GetMethodIndex();
- ObjectArray<ArtMethod>* super_class_vtable = super_class->GetVTable();
ArtMethod* result = NULL;
// Did this method override a super class method? If so load the result from the super class'
// vtable
- if (super_class_vtable != NULL && method_index < super_class_vtable->GetLength()) {
- result = super_class_vtable->Get(method_index);
+ if (super_class->HasVTable() && method_index < super_class->GetVTableLength()) {
+ result = super_class->GetVTableEntry(method_index);
} else {
// Method didn't override superclass method so search interfaces
if (IsProxyMethod()) {
diff --git a/runtime/mirror/class-inl.h b/runtime/mirror/class-inl.h
index 329a984..c3754d7 100644
--- a/runtime/mirror/class-inl.h
+++ b/runtime/mirror/class-inl.h
@@ -161,6 +161,37 @@
CHECK(method == GetImTable()->Get(i));
}
+inline bool Class::HasVTable() {
+ return (GetVTable() != nullptr) || ShouldHaveEmbeddedImtAndVTable();
+}
+
+inline int32_t Class::GetVTableLength() {
+ if (ShouldHaveEmbeddedImtAndVTable()) {
+ return GetEmbeddedVTableLength();
+ }
+ return (GetVTable() != nullptr) ? GetVTable()->GetLength() : 0;
+}
+
+inline ArtMethod* Class::GetVTableEntry(uint32_t i) {
+ if (ShouldHaveEmbeddedImtAndVTable()) {
+ return GetEmbeddedVTableEntry(i);
+ }
+ return (GetVTable() != nullptr) ? GetVTable()->Get(i) : nullptr;
+}
+
+inline int32_t Class::GetEmbeddedVTableLength() {
+ return GetField32(EmbeddedVTableLengthOffset());
+}
+
+inline void Class::SetEmbeddedVTableLength(int32_t len) {
+ SetField32<false>(EmbeddedVTableLengthOffset(), len);
+}
+
+inline ArtMethod* Class::GetEmbeddedVTableEntry(uint32_t i) {
+ uint32_t offset = EmbeddedVTableOffset().Uint32Value() + i * sizeof(VTableEntry);
+ return GetFieldObject<mirror::ArtMethod>(MemberOffset(offset));
+}
+
inline void Class::SetEmbeddedVTableEntry(uint32_t i, ArtMethod* method) {
uint32_t offset = EmbeddedVTableOffset().Uint32Value() + i * sizeof(VTableEntry);
SetFieldObject<false>(MemberOffset(offset), method);
@@ -340,12 +371,12 @@
DCHECK(!method->GetDeclaringClass()->IsInterface() || method->IsMiranda());
// The argument method may from a super class.
// Use the index to a potentially overridden one for this instance's class.
- return GetVTable()->Get(method->GetMethodIndex());
+ return GetVTableEntry(method->GetMethodIndex());
}
inline ArtMethod* Class::FindVirtualMethodForSuper(ArtMethod* method) {
DCHECK(!method->GetDeclaringClass()->IsInterface());
- return GetSuperClass()->GetVTable()->Get(method->GetMethodIndex());
+ return GetSuperClass()->GetVTableEntry(method->GetMethodIndex());
}
inline ArtMethod* Class::FindVirtualMethodForVirtualOrInterface(ArtMethod* method) {
@@ -534,13 +565,19 @@
if (has_embedded_tables) {
uint32_t embedded_imt_size = kImtSize * sizeof(ImTableEntry);
uint32_t embedded_vtable_size = num_vtable_entries * sizeof(VTableEntry);
- size += embedded_imt_size + embedded_vtable_size;
+ size += embedded_imt_size +
+ sizeof(int32_t) /* vtable len */ +
+ embedded_vtable_size;
}
// Space used by reference statics.
size += num_ref_static_fields * sizeof(HeapReference<Object>);
// Possible pad for alignment.
- if (((size & 7) != 0) && (num_64bit_static_fields > 0) && (num_32bit_static_fields == 0)) {
+ if (((size & 7) != 0) && (num_64bit_static_fields > 0)) {
size += sizeof(uint32_t);
+ if (num_32bit_static_fields != 0) {
+ // Shuffle one 32 bit static field forward.
+ num_32bit_static_fields--;
+ }
}
// Space used for primitive static fields.
size += (num_32bit_static_fields * sizeof(uint32_t)) +
@@ -574,7 +611,10 @@
pos += sizeof(ImTableEntry);
}
- count = ((GetVTable() != NULL) ? GetVTable()->GetLength() : 0);
+ // Skip vtable length.
+ pos += sizeof(int32_t);
+
+ count = GetEmbeddedVTableLength();
for (size_t i = 0; i < count; ++i) {
MemberOffset offset = MemberOffset(pos);
visitor(this, offset, true);
diff --git a/runtime/mirror/class.cc b/runtime/mirror/class.cc
index be05fb8..036d904 100644
--- a/runtime/mirror/class.cc
+++ b/runtime/mirror/class.cc
@@ -828,10 +828,18 @@
}
table = GetVTableDuringLinking();
- CHECK(table != nullptr);
+ CHECK(table != nullptr) << PrettyClass(this);
+ SetEmbeddedVTableLength(table->GetLength());
for (int32_t i = 0; i < table->GetLength(); i++) {
SetEmbeddedVTableEntry(i, table->Get(i));
}
+
+ SetImTable(nullptr);
+ // Keep java.lang.Object class's vtable around for since it's easier
+ // to be reused by array classes during their linking.
+ if (!IsObjectClass()) {
+ SetVTable(nullptr);
+ }
}
Class* Class::CopyOf(Thread* self, int32_t new_length) {
diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 648bdde..0525abf 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -692,18 +692,34 @@
return MemberOffset(sizeof(Class));
}
- static MemberOffset EmbeddedVTableOffset() {
+ static MemberOffset EmbeddedVTableLengthOffset() {
return MemberOffset(sizeof(Class) + kImtSize * sizeof(mirror::Class::ImTableEntry));
}
+ static MemberOffset EmbeddedVTableOffset() {
+ return MemberOffset(sizeof(Class) + kImtSize * sizeof(mirror::Class::ImTableEntry) + sizeof(int32_t));
+ }
+
bool ShouldHaveEmbeddedImtAndVTable() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return IsInstantiable();
}
+ bool HasVTable() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
ArtMethod* GetEmbeddedImTableEntry(uint32_t i) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void SetEmbeddedImTableEntry(uint32_t i, ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+ int32_t GetVTableLength() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ ArtMethod* GetVTableEntry(uint32_t i) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ int32_t GetEmbeddedVTableLength() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ void SetEmbeddedVTableLength(int32_t len) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ ArtMethod* GetEmbeddedVTableEntry(uint32_t i) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
void SetEmbeddedVTableEntry(uint32_t i, ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void PopulateEmbeddedImtAndVTable() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
diff --git a/runtime/verifier/method_verifier.cc b/runtime/verifier/method_verifier.cc
index 3214592..80c7283 100644
--- a/runtime/verifier/method_verifier.cc
+++ b/runtime/verifier/method_verifier.cc
@@ -3254,7 +3254,7 @@
return nullptr;
}
mirror::Class* super_klass = super.GetClass();
- if (res_method->GetMethodIndex() >= super_klass->GetVTable()->GetLength()) {
+ if (res_method->GetMethodIndex() >= super_klass->GetVTableLength()) {
Fail(VERIFY_ERROR_NO_METHOD) << "invalid invoke-super from "
<< PrettyMethod(dex_method_idx_, *dex_file_)
<< " to super " << super
@@ -3279,20 +3279,21 @@
VLOG(verifier) << "Failed to get mirror::Class* from '" << actual_arg_type << "'";
return nullptr;
}
- mirror::ObjectArray<mirror::ArtMethod>* vtable = nullptr;
mirror::Class* klass = actual_arg_type.GetClass();
+ mirror::Class* dispatch_class;
if (klass->IsInterface()) {
// Derive Object.class from Class.class.getSuperclass().
mirror::Class* object_klass = klass->GetClass()->GetSuperClass();
CHECK(object_klass->IsObjectClass());
- vtable = object_klass->GetVTable();
+ dispatch_class = object_klass;
} else {
- vtable = klass->GetVTable();
+ dispatch_class = klass;
}
- CHECK(vtable != nullptr) << PrettyDescriptor(klass);
+ CHECK(dispatch_class->HasVTable()) << PrettyDescriptor(dispatch_class);
uint16_t vtable_index = is_range ? inst->VRegB_3rc() : inst->VRegB_35c();
- CHECK_LT(static_cast<int32_t>(vtable_index), vtable->GetLength()) << PrettyDescriptor(klass);
- mirror::ArtMethod* res_method = vtable->Get(vtable_index);
+ CHECK_LT(static_cast<int32_t>(vtable_index), dispatch_class->GetVTableLength())
+ << PrettyDescriptor(klass);
+ mirror::ArtMethod* res_method = dispatch_class->GetVTableEntry(vtable_index);
CHECK(!Thread::Current()->IsExceptionPending());
return res_method;
}
diff --git a/test/100-reflect2/expected.txt b/test/100-reflect2/expected.txt
index bed0689..1af4121 100644
--- a/test/100-reflect2/expected.txt
+++ b/test/100-reflect2/expected.txt
@@ -32,7 +32,7 @@
62 (class java.lang.Long)
14 (class java.lang.Short)
[public java.lang.String(), java.lang.String(int,int,char[]), public java.lang.String(java.lang.String), public java.lang.String(java.lang.StringBuffer), public java.lang.String(java.lang.StringBuilder), public java.lang.String(byte[]), public java.lang.String(byte[],int), public java.lang.String(byte[],int,int), public java.lang.String(byte[],int,int,int), public java.lang.String(byte[],int,int,java.lang.String) throws java.io.UnsupportedEncodingException, public java.lang.String(byte[],int,int,java.nio.charset.Charset), public java.lang.String(byte[],java.lang.String) throws java.io.UnsupportedEncodingException, public java.lang.String(byte[],java.nio.charset.Charset), public java.lang.String(char[]), public java.lang.String(char[],int,int), public java.lang.String(int[],int,int)]
-[private final char[] java.lang.String.value, private final int java.lang.String.count, private int java.lang.String.hashCode, private final int java.lang.String.offset, private static final char[] java.lang.String.ASCII, public static final java.util.Comparator java.lang.String.CASE_INSENSITIVE_ORDER, private static final char java.lang.String.REPLACEMENT_CHAR, private static final long java.lang.String.serialVersionUID]
+[private final char[] java.lang.String.value, private final int java.lang.String.count, private int java.lang.String.hashCode, private final int java.lang.String.offset, private static final char[] java.lang.String.ASCII, public static final java.util.Comparator java.lang.String.CASE_INSENSITIVE_ORDER, private static final long java.lang.String.serialVersionUID, private static final char java.lang.String.REPLACEMENT_CHAR]
[void java.lang.String._getChars(int,int,char[],int), public char java.lang.String.charAt(int), public int java.lang.String.codePointAt(int), public int java.lang.String.codePointBefore(int), public int java.lang.String.codePointCount(int,int), public volatile int java.lang.String.compareTo(java.lang.Object), public native int java.lang.String.compareTo(java.lang.String), public int java.lang.String.compareToIgnoreCase(java.lang.String), public java.lang.String java.lang.String.concat(java.lang.String), public boolean java.lang.String.contains(java.lang.CharSequence), public boolean java.lang.String.contentEquals(java.lang.CharSequence), public boolean java.lang.String.contentEquals(java.lang.StringBuffer), public boolean java.lang.String.endsWith(java.lang.String), public boolean java.lang.String.equals(java.lang.Object), public boolean java.lang.String.equalsIgnoreCase(java.lang.String), public void java.lang.String.getBytes(int,int,byte[],int), public [B java.lang.String.getBytes(), public [B java.lang.String.getBytes(java.lang.String) throws java.io.UnsupportedEncodingException, public [B java.lang.String.getBytes(java.nio.charset.Charset), public void java.lang.String.getChars(int,int,char[],int), public int java.lang.String.hashCode(), public int java.lang.String.indexOf(int), public int java.lang.String.indexOf(int,int), public int java.lang.String.indexOf(java.lang.String), public int java.lang.String.indexOf(java.lang.String,int), public native java.lang.String java.lang.String.intern(), public boolean java.lang.String.isEmpty(), public int java.lang.String.lastIndexOf(int), public int java.lang.String.lastIndexOf(int,int), public int java.lang.String.lastIndexOf(java.lang.String), public int java.lang.String.lastIndexOf(java.lang.String,int), public int java.lang.String.length(), public boolean java.lang.String.matches(java.lang.String), public int java.lang.String.offsetByCodePoints(int,int), public boolean java.lang.String.regionMatches(int,java.lang.String,int,int), public boolean java.lang.String.regionMatches(boolean,int,java.lang.String,int,int), public java.lang.String java.lang.String.replace(char,char), public java.lang.String java.lang.String.replace(java.lang.CharSequence,java.lang.CharSequence), public java.lang.String java.lang.String.replaceAll(java.lang.String,java.lang.String), public java.lang.String java.lang.String.replaceFirst(java.lang.String,java.lang.String), public [Ljava.lang.String; java.lang.String.split(java.lang.String), public [Ljava.lang.String; java.lang.String.split(java.lang.String,int), public boolean java.lang.String.startsWith(java.lang.String), public boolean java.lang.String.startsWith(java.lang.String,int), public java.lang.CharSequence java.lang.String.subSequence(int,int), public java.lang.String java.lang.String.substring(int), public java.lang.String java.lang.String.substring(int,int), public [C java.lang.String.toCharArray(), public java.lang.String java.lang.String.toLowerCase(), public java.lang.String java.lang.String.toLowerCase(java.util.Locale), public java.lang.String java.lang.String.toString(), public java.lang.String java.lang.String.toUpperCase(), public java.lang.String java.lang.String.toUpperCase(java.util.Locale), public java.lang.String java.lang.String.trim(), public static java.lang.String java.lang.String.copyValueOf(char[]), public static java.lang.String java.lang.String.copyValueOf(char[],int,int), private java.lang.StringIndexOutOfBoundsException java.lang.String.failedBoundsCheck(int,int,int), private native int java.lang.String.fastIndexOf(int,int), private char java.lang.String.foldCase(char), public static transient java.lang.String java.lang.String.format(java.lang.String,java.lang.Object[]), public static transient java.lang.String java.lang.String.format(java.util.Locale,java.lang.String,java.lang.Object[]), private java.lang.StringIndexOutOfBoundsException java.lang.String.indexAndLength(int), private static int java.lang.String.indexOf(java.lang.String,java.lang.String,int,int,char), private int java.lang.String.indexOfSupplementary(int,int), private int java.lang.String.lastIndexOfSupplementary(int,int), private java.lang.StringIndexOutOfBoundsException java.lang.String.startEndAndLength(int,int), public static java.lang.String java.lang.String.valueOf(char), public static java.lang.String java.lang.String.valueOf(double), public static java.lang.String java.lang.String.valueOf(float), public static java.lang.String java.lang.String.valueOf(int), public static java.lang.String java.lang.String.valueOf(long), public static java.lang.String java.lang.String.valueOf(java.lang.Object), public static java.lang.String java.lang.String.valueOf(boolean), public static java.lang.String java.lang.String.valueOf(char[]), public static java.lang.String java.lang.String.valueOf(char[],int,int)]
[]
[interface java.io.Serializable, interface java.lang.Comparable, interface java.lang.CharSequence]
