src/java.base/share/classes/jdk/internal/org/objectweb/asm/util/CheckMethodAdapter.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

*** 1312,1322 ****
        * @param version the class version.
        * @param name the string to be checked.
        * @param message the message to use in case of error.
        */
      static void checkMethodIdentifier(final int version, final String name, final String message) {
!         if (name == null || name.length() == 0) {
              throw new IllegalArgumentException(INVALID + message + MUST_NOT_BE_NULL_OR_EMPTY);
          }
          if ((version & 0xFFFF) >= Opcodes.V1_5) {
              for (int i = 0; i < name.length(); i = name.offsetByCodePoints(i, 1)) {
                  if (".;[/<>".indexOf(name.codePointAt(i)) != -1) {
--- 1312,1322 ----
        * @param version the class version.
        * @param name the string to be checked.
        * @param message the message to use in case of error.
        */
      static void checkMethodIdentifier(final int version, final String name, final String message) {
!         if (name == null || name.isEmpty()) {
              throw new IllegalArgumentException(INVALID + message + MUST_NOT_BE_NULL_OR_EMPTY);
          }
          if ((version & 0xFFFF) >= Opcodes.V1_5) {
              for (int i = 0; i < name.length(); i = name.offsetByCodePoints(i, 1)) {
                  if (".;[/<>".indexOf(name.codePointAt(i)) != -1) {
*** 1345,1355 ****
        * @param version the class version.
        * @param name the string to be checked.
        * @param message the message to use in case of error.
        */
      static void checkInternalName(final int version, final String name, final String message) {
!         if (name == null || name.length() == 0) {
              throw new IllegalArgumentException(INVALID + message + MUST_NOT_BE_NULL_OR_EMPTY);
          }
          if (name.charAt(0) == '[') {
              checkDescriptor(version, name, false);
          } else {
--- 1345,1355 ----
        * @param version the class version.
        * @param name the string to be checked.
        * @param message the message to use in case of error.
        */
      static void checkInternalName(final int version, final String name, final String message) {
!         if (name == null || name.isEmpty()) {
              throw new IllegalArgumentException(INVALID + message + MUST_NOT_BE_NULL_OR_EMPTY);
          }
          if (name.charAt(0) == '[') {
              checkDescriptor(version, name, false);
          } else {
*** 1455,1465 ****
        *
        * @param version the class version.
        * @param descriptor the string to be checked.
        */
      static void checkMethodDescriptor(final int version, final String descriptor) {
!         if (descriptor == null || descriptor.length() == 0) {
              throw new IllegalArgumentException("Invalid method descriptor (must not be null or empty)");
          }
          if (descriptor.charAt(0) != '(' || descriptor.length() < 3) {
              throw new IllegalArgumentException(INVALID_DESCRIPTOR + descriptor);
          }
--- 1455,1465 ----
        *
        * @param version the class version.
        * @param descriptor the string to be checked.
        */
      static void checkMethodDescriptor(final int version, final String descriptor) {
!         if (descriptor == null || descriptor.isEmpty()) {
              throw new IllegalArgumentException("Invalid method descriptor (must not be null or empty)");
          }
          if (descriptor.charAt(0) != '(' || descriptor.length() < 3) {
              throw new IllegalArgumentException(INVALID_DESCRIPTOR + descriptor);
          }