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Java example source code file (WritePrimitive.java)

This example Java source code file (WritePrimitive.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

error, exception, failed, fileinputstream, fileoutputstream, ioexception, objectinputstream, objectoutputstream, primitivestest, string, the, writeprimitive

The WritePrimitive.java Java example source code

/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/* @test
 * @summary it is a new version of an old test which was
 *          /src/share/test/serialization/piotest.java
 *          Test of serialization/deserialization of
 *          primitives
 *
 * @build PrimitivesTest
 * @run main WritePrimitive
 */

import java.io.*;

public class WritePrimitive {
    public static void main (String argv[]) throws IOException {
        System.err.println("\nRegression test for testing of " +
            "serialization/deserialization of primitives \n");

        FileInputStream istream = null;
        FileOutputStream ostream = null;
        try {
            int i = 123456;
            byte b = 12;
            short s = 45;
            char c = 'A';
            long l = 1234567890000L;
            float f = 3.14159f;
            double d = f*2;
            boolean z = true;
            String string = "The String";
            PrimitivesTest prim = new PrimitivesTest();

            ostream = new FileOutputStream("piotest1.tmp");
            ObjectOutputStream p = new ObjectOutputStream(ostream);

            p.writeInt(i);
            p.writeByte(b);
            p.writeShort(s);
            p.writeChar(c);
            p.writeLong(l);
            p.writeFloat(f);
            p.writeDouble(d);
            p.writeBoolean(z);
            p.writeUTF(string);
            p.writeObject(string);

            p.writeObject(prim);
            p.flush();

            istream = new FileInputStream("piotest1.tmp");
            ObjectInputStream q = new ObjectInputStream(istream);

            int i_u = q.readInt();
            byte b_u = q.readByte();
            short s_u = q.readShort();
            char c_u = q.readChar();
            long l_u = q.readLong();
            float f_u = q.readFloat();
            double d_u = q.readDouble();
            boolean z_u = q.readBoolean();
            String string_utf = q.readUTF();
            String string_u = (String)q.readObject();
            if (i != i_u) {
                System.err.println("\nint:  expected " + i + " actual " +i_u);
                throw new Error();
            }
            if (b != b_u) {
                System.err.println("\nbyte:  expected " + b + " actual " +b_u);
                throw new Error();
            }
            if (s != s_u) {
                System.err.println("\nshort:  expected " + s + " actual " +
                                   s_u);
                throw new Error();
            }
            if (c != c_u) {
                System.err.println("\nchar:  expected " + c + " actual " +
                                   c_u);
                throw new Error();
            }
            if (l != l_u) {
                System.err.println("\nlong:  expected " + l + " actual " +
                                   l_u);
                throw new Error();
            }
            if (f != f_u) {
                System.err.println("\nfloat:  expected " + f + " actual " +
                                   f_u);
                throw new Error();
            }
            if (d != d_u) {
                System.err.println("\ndouble:  expected " + d + " actual " +
                                   d_u);
                throw new Error();
            }
            if (z != z_u) {
                System.err.println("\nboolean:  expected " + z + " actual " +
                                   z_u);
                throw new Error();
            }
            if (!string.equals(string_utf)) {
                System.err.println("\nString:  expected " + string +
                                   " actual " + string_utf);
                throw new Error();
            }
            if (!string.equals(string_u)) {
                System.err.println("\nString:  expected " + string +
                                   " actual " + string_u);
                throw new Error();
            }

            PrimitivesTest prim_u = (PrimitivesTest)q.readObject();
            if (!prim.equals(prim_u)) {
                System.err.println("\nTEST FAILED: Read primitive object " +
                    "correctly = " + false);
                System.err.println("\n " + prim);
                System.err.println("\n " + prim_u);
                throw new Error();
            }
            System.err.println("\nTEST PASSED");
        } catch (Exception e) {
            System.err.print("TEST FAILED: ");
            e.printStackTrace();

            System.err.println("\nInput remaining");
            int ch;
            try {
                while ((ch = istream.read()) != -1) {
                    System.err.print("\n " + Integer.toString(ch, 16)+ " ");
                }
                System.out.println("\n ");
            } catch (Exception f) {
                throw new Error();
            }
            throw new Error();
        } finally {
            if (istream != null) istream.close();
            if (ostream != null) ostream.close();
        }
    }
}

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