Re: Conversions in Java

On 5/21/2013 6:07 PM, Panoramix wrote:


Numbers of possible types are infinite.

So number of conversions between types are also infinite.

But if you are only thinking about the most basic types
then see below for some examples.

Arne

====

    int iv = 123;
    double xv2;
    xv2 = iv;

    int iv = 123;
    boolean bv2;
    bv2 = (iv != 0);

    int iv = 123;
    char cv2;
    cv2 = (char)iv;

    int iv = 123;
    String sv2;
    sv2 = Integer.toString(iv);

    double xv = 123.456;
    int iv2;
    iv2 = (int)xv;

    double xv = 123.456;
    String sv2;
    sv2 = Double.toString(xv);

    boolean bv = true;
    int iv2;
    iv2 = (bv ? 1 : 0);

    boolean bv = true;
    String sv2;
    sv2 = (new Boolean(bv)).toString();

    char cv = 'A';
    int iv2;
    iv2 = cv;

    char cv = 'A';
    String sv2;
    sv2 = new String(new char[] { cv });

    String sv = "123";
    int iv2;
    iv2 = Integer.parseInt(sv);

    String sv = "123.456";
    double xv2;
    xv2 = Double.parseDouble(sv);

    String sv = "true";
    boolean bv2;
    bv2 = Boolean.valueOf(sv).booleanValue();

    String sv = "ABC";
    char cv2;
    cv2 = sv.charAt(0);

    int iv = 123;
    String sv2;
    sv2 = Integer.toHexString(iv);

    String sv = "7b";
    int iv2;
    iv2 = Integer.parseInt(sv, 16);

    byte[] b = { 65, 66, 67 };
    String s2;
    s2 = new String(b, "ISO-8859-1");

    String s = "abc";
    byte[] b2;
    b2 = s.getBytes("ISO-8859-1");

    int iv = 123;
    Integer iv2;
    iv2 = new Integer(iv);

    Integer iv = new Integer(123);
    int iv2;
    iv2 = iv.intValue();

    java.util.Date d;
    java.util.Calendar cal = new java.util.GregorianCalendar();
    d = cal.getTime();

    java.util.Date d = new java.util.Date();
    java.util.Calendar cal = new java.util.GregorianCalendar();
    cal.setTime(d);

    java.util.Date d = new java.util.Date();
    java.text.DateFormat df = new
java.text.SimpleDateFormat("dd-MMM-yyyy hh:mm");
    String ds;
    ds = df.format(d);

    String ds = "31-Jan-2004 09:24"
    java.util.Date d;
    java.text.DateFormat df = new
java.text.SimpleDateFormat("dd-MMM-yyyy hh:mm");
    d = df.parse(ds);

    java.util.Date d = new java.util.Date();
    java.sql.Timestamp ts;
    ts = new java.sql.Timestamp(d.getTime());

    java.sql.Timestamp ts = new java.sql.Timestamp((new Date()).getTime());
    java.util.Date d;
    d = ts;