convert a string number starts with `00` to `+` in java

convert a string number starts with `00` to `+` in java

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convert a string number starts with `00` to `+` in java
Tag : java , By : Al Dimond
Date : November 27 2020, 04:01 AM

hop of those help? Inculding the added requirement: If it starts with 000 or more, I do not want to replace with + sign.
String normalized = phone;
if ( !phone.matches("000+([0-9]+)") && phone.startsWith("00")) {
    normalized = "+"+phone.substring(2);

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java: convert a string to a string that contains the hex number of each character

Tag : java , By : user178709
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further commons-codec has Hex.encode(byteArray) you can also use Integer.toHexString(..) for each byte
Just be careful when obtaining the bytes. Use the method getBytes(ecnoding) instead of the one without arguments which takes the platform encoding.

convert hexadecimal number string to double-precision number in java

Tag : java , By : TBG
Date : March 29 2020, 07:55 AM
Any of those help I think you want Double.longBitsToDouble, like this:
public class Test {
    public static void main(String[] args) {
        String hex = "c0399999a0000000";
        long longHex = parseUnsignedHex(hex);
        double d = Double.longBitsToDouble(longHex);

    public static long parseUnsignedHex(String text) {
        if (text.length() == 16) {
            return (parseUnsignedHex(text.substring(0, 1)) << 60)
                    | parseUnsignedHex(text.substring(1));
        return Long.parseLong(text, 16);

How Do I convert very big String to number in Java

Tag : java , By : Steve
Date : March 29 2020, 07:55 AM
I hope this helps . Use BigInteger class like this:
 BigInteger number = new BigInteger(longString);

How to convert string to number in java ? But i am not looking for hashCode as it wont give unique number. at least i wa

Tag : java , By : Ian
Date : March 29 2020, 07:55 AM
Does that help Hi I want to convert string to some unique number in java. Exmple: "Production-0-1" to 100021 "Process-23-30" to 12310 And all return number has to be unique. I dont wanted to use hashCode as they can return duplicate like "Aa" and "BB" has same has code. Let me know math logic to create this is no method available.
    String random = "Production-0-1";
    String bi = new BigInteger(random.getBytes("UTF-8")).toString();
    BigInteger numBig = new BigInteger(bi);

How to convert String to number in Java?

Tag : java , By : George Handlin
Date : March 29 2020, 07:55 AM
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