move java files

port_src/core/DONE/ReaderException.java

@@ -0,0 +1,58 @@
+/*
+ * 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;
+
+/**
+ * The general exception class throw when something goes wrong during decoding of a barcode.
+ * This includes, but is not limited to, failing checksums / error correction algorithms, being
+ * unable to locate finder timing patterns, and so on.
+ *
+ * @author Sean Owen
+ */
+public abstract class ReaderException extends Exception {
+
+  // disable stack traces when not running inside test units
+  protected static boolean isStackTrace =
+      System.getProperty("surefire.test.class.path") != null;
+  protected static final StackTraceElement[] NO_TRACE = new StackTraceElement[0];
+
+  ReaderException() {
+    // do nothing
+  }
+
+  ReaderException(Throwable cause) {
+    super(cause);
+  }
+
+  // Prevent stack traces from being taken
+  @Override
+  public final synchronized Throwable fillInStackTrace() {
+    return null;
+  }
+
+  /**
+   * For testing only. Controls whether library exception classes include stack traces or not.
+   * Defaults to false, unless running in the project's unit testing harness.
+   *
+   * @param enabled if true, enables stack traces in library exception classes
+   * @since 3.5.0
+   */
+  public static void setStackTrace(boolean enabled) {
+    isStackTrace = enabled;
+  }
+
+}