#Java - Code Snippets for '#Math.random()'

#Java - Code Snippets for '#Math.random()' - 4 code snippet(s) found

Sample 1. Generate a Random Integer from 0 to 100

double randomNo = Math.random();

System.out.println((int)(randomNo*100));

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Sample 2. Generate a Random float number from 0 to 1

double randomNo = Math.random();

System.out.println(randomNo);

_{Like Feedback random number random number generation Math.random()}

Sample 3. Code Sample / Example / Snippet of org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream

    public void readOfLength0ShouldReturn0() throws Exception {

        final byte[] rawData = new byte[1048576];

        for (int i=0; i < rawData.length; ++i) {

            rawData[i] = (byte) Math.floor(Math.random()*256);

        }



        final ByteArrayOutputStream baos = new ByteArrayOutputStream();

        final BZip2CompressorOutputStream bzipOut = new BZip2CompressorOutputStream(baos);

        bzipOut.write(rawData);

        bzipOut.flush();

        bzipOut.close();

        baos.flush();

        baos.close();



        final ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

        final BZip2CompressorInputStream bzipIn = new BZip2CompressorInputStream(bais);

        final byte[] buffer = new byte[1024];

        Assert.assertEquals(1024, bzipIn.read(buffer, 0, 1024));

        Assert.assertEquals(0, bzipIn.read(buffer, 1024, 0));

        Assert.assertEquals(1024, bzipIn.read(buffer, 0, 1024));

        bzipIn.close();

    }

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Sample 4. Code Sample / Example / Snippet of org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream

    public void readOfLength0ShouldReturn0() throws Exception {

        final byte[] rawData = new byte[1048576];

        for (int i=0; i < rawData.length; ++i) {

            rawData[i] = (byte) Math.floor(Math.random()*256);

        }



        final ByteArrayOutputStream baos = new ByteArrayOutputStream();

        final BZip2CompressorOutputStream bzipOut = new BZip2CompressorOutputStream(baos);

        bzipOut.write(rawData);

        bzipOut.flush();

        bzipOut.close();

        baos.flush();

        baos.close();



        final ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

        final BZip2CompressorInputStream bzipIn = new BZip2CompressorInputStream(bais);

        final byte[] buffer = new byte[1024];

        Assert.assertEquals(1024, bzipIn.read(buffer, 0, 1024));

        Assert.assertEquals(0, bzipIn.read(buffer, 1024, 0));

        Assert.assertEquals(1024, bzipIn.read(buffer, 0, 1024));

        bzipIn.close();

    }

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