move java files

port_src/core/DONE/ChecksumException.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2007 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing;
+
+/**
+ * Thrown when a barcode was successfully detected and decoded, but
+ * was not returned because its checksum feature failed.
+ *
+ * @author Sean Owen
+ */
+public final class ChecksumException extends ReaderException {
+
+  private static final ChecksumException INSTANCE = new ChecksumException();
+  static {
+    INSTANCE.setStackTrace(NO_TRACE); // since it's meaningless
+  }
+
+  private ChecksumException() {
+    // do nothing
+  }
+
+  private ChecksumException(Throwable cause) {
+    super(cause);
+  }
+
+  public static ChecksumException getChecksumInstance() {
+    return isStackTrace ? new ChecksumException() : INSTANCE;
+  }
+
+  public static ChecksumException getChecksumInstance(Throwable cause) {
+    return isStackTrace ? new ChecksumException(cause) : INSTANCE;
+  }
+}