Allocation.java example

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/*
 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
 *
 *  This file is licensed to You under the Eclipse Public License (EPL);
 *  You may not use this file except in compliance with the License. You
 *  may obtain a copy of the License at
 *
 *      http://www.opensource.org/licenses/eclipse-1.0.php
 *
 *  See the COPYRIGHT.txt file distributed with this work for information
 *  regarding copyright ownership.
 */
class Allocation {
  static boolean verbose = true;         // set to true to get messages for each test
  static boolean allTestPass = true;

  public static native void setVerboseOff();

  /**
   * Declare native methods that will call the JNI NewObject Functions
   */
  static native String testNewObjectA(Class cls, char[] inputCharArray);
  static native String testNewObjectV(Class cls, char[] inputCharArray);
  static native String testNewObject(Class cls, char[] inputCharArray);

  public static void main(String[] args) {

    String returnObj;
    Class classObj = null;

    System.loadLibrary("Allocation");

    if (args.length != 0) {
      if (args[0].equals("-quiet")) {
        verbose = false;
        setVerboseOff();
      }
    }

    // the class to create a new instance

    try {
      classObj = Class.forName("java.lang.String");
    } catch (Exception e) {
      System.out.println("Fix test program");
    }

    // get some input for creating the new instance of String
    String inputStr = "Month Of March";
    char[] inputCharArray = new char[inputStr.length()];
    inputStr.getChars(0, inputStr.length(), inputCharArray, 0);

    returnObj = testNewObjectA(classObj, inputCharArray);
    // System.out.println("The new object:  " + returnObj);
    checkTest(0, (returnObj.equals(inputStr)), "NewObjectA");

    returnObj = null;
    returnObj = testNewObjectV(classObj, inputCharArray);
    // System.out.println("The new object:  " + returnObj);
    checkTest(0, (returnObj.equals(inputStr)), "NewObjectV");

    returnObj = null;
    returnObj = testNewObject(classObj, inputCharArray);
    // System.out.println("The new object:  " + returnObj);
    checkTest(0, (returnObj.equals(inputStr)), "NewObject");


    // Summarize

    if (allTestPass)
      System.out.println("PASS: Allocation");
    else
      System.out.println("FAIL: Allocation");
  }


  static void printVerbose(String str) {
    if (verbose)
      System.out.println(str);
  }

  static void checkTest(int returnValue, boolean postCheck, String testName) {
    if (returnValue == 0 && postCheck) {
      printVerbose("PASS: " + testName);
    } else {
      allTestPass = false;
      printVerbose("FAIL: " + testName);
    }
  }


}