How to convert string to long in java?

  1. public class StringToLongExample{
  2. public static void main(String args[]){
  3. String s=”9990449935″;
  4. long l=Long.parseLong(s);
  5. System.out.println(l);
  6. }}

Can we convert int to long in java?

We can convert int to long in java using assignment operator. There is nothing to do extra because lower type can be converted to higher type implicitly. It is also known as implicit type casting or type promotion.

How do you convert string to double and long to string in java?

  1. Using Double.parseDouble() Syntax: double str1 = Double.parseDouble(str); // Java program to convert String to Double.
  2. Using Double.valueOf() Syntax: double str1 = Double.valueOf(str); Examples:
  3. Using constructor of Double class. Syntax: Double str1 = new Double(str);

How do you convert a decimal to a long string?

  1. Use try catch block.
  2. Check the string variable is it has the decimal value or not. If it has the decimal value then split it from “.”, And use the index one value (if it is not blancked)
  3. Use the Bigdecimal value.

How do I convert string to minutes?

Split the string into its component parts. Get the number of minutes from the conversion table. Multiply that by the number and that is the number of minutes. Convert that to whatever format you need for the display.

How do you convert long to int?

  1. public class LongToIntExample2{
  2. public static void main(String args[]){
  3. Long l= new Long(10);
  4. int i=l.intValue();
  5. System.out.println(i);
  6. }}

Can an int be a long?

Int can be converted to long in two simple ways: Using a simple assignment. This is known as implicit type casting or type promotion, the compiler automatically converts smaller data types to larger data types. Using valueOf() method of the Long wrapper class in java which converts int to long.

Is double in Java?

double: The double data type is a double-precision 64-bit IEEE 754 floating point. Its range of values is beyond the scope of this discussion, but is specified in the Floating-Point Types, Formats, and Values section of the Java Language Specification. For decimal values, this data type is generally the default choice.

Can we convert string to double in Java?

We can convert String to double in java using Double. parseDouble() method.

How do you check if a string is a number Java?

  1. Integer. parseInt()
  2. Integer. valueOf()
  3. Double. parseDouble()
  4. Float. parseFloat()
  5. Long. parseLong()

How do I convert a string to long?

  1. public class StringToLongExample{
  2. public static void main(String args[]){
  3. String s=”9990449935″;
  4. long l=Long.parseLong(s);
  5. System.out.println(l);
  6. }}

Can a long have decimals Java?

Long variables can hold numbers from -9,223,372,036,854,775,808 through 9,223,372,036,854,775,807. Operations with Long are slightly slower than with Integer . If you need even larger values, you can use the Decimal Data Type.

Which is bigger double or long Java?

If you are storing integers, use Long . Your statement that “Advantage of Using Double is that it gives a more wider range for storing Whole Numbers” is incorrect. Both are 64 bits long, but double has to use some bits for the exponent, leaving fewer bits to represent the magnitude.

How do I convert a date to a string?

  1. Get the date to be converted.
  2. Create an instance of SimpleDateFormat class to format the string representation of the date object.
  3. Get the date using the Calendar object.
  4. Convert the given date into a string using format() method.
  5. Print the result.

What is SimpleDateFormat?

SimpleDateFormat is a concrete class for formatting and parsing dates in a locale-sensitive manner. It allows for formatting (date -> text), parsing (text -> date), and normalization. SimpleDateFormat allows you to start by choosing any user-defined patterns for date-time formatting.

How do you format a date in Java?

  1. import java.text.SimpleDateFormat;
  2. import java.util.Date;
  3. public class SimpleDateFormatExample {
  4. public static void main(String[] args) {
  5. Date date = new Date();
  6. SimpleDateFormat formatter = new SimpleDateFormat(“dd/MM/yyyy”);
  7. String strDate= formatter.format(date);
  8. System.out.println(strDate);