InstanceVariableUninitializedUse.java

/*
 * Copyright 2000-2015 JetBrains s.r.o.
 *
 * 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.siyeh.igtest.initialization.instance_variable_uninitialized_use;

import java.io.IOException;

class InstanceVariableUnitializedUse {
  int i;

  InstanceVariableUnitializedUse() throws IOException {
    try (java.io.FileInputStream in = new java.io.FileInputStream("asdf" + (i=3) + "asdf")) {}
    System.out.println(i);
  }
}

class InstanceFieldVsDoWhile {
  private Object object;

  public InstanceFieldVsDoWhile() {
    do {
      object = new Object();
    } while (object.hashCode() < 1000); // Instance field used before initialization
  }
}

class FinalField {
  private final Object object;

  FinalField() {
    System.out.println(<error descr="Variable 'object' might not have been initialized">object</error>);
    object = null;
  }
}