Search results
Results from the WOW.Com Content Network
The way I know how to convert an integer into a string is by using the following code: Integer.toString(int); and . String.valueOf(int); If you had an integer i, and a string s, then the following would apply: int i; String s = Integer.toString(i); or String s = String.valueOf(i);
Alternatively, you can use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int: import com.google.common.primitives.Ints; int foo = Optional.ofNullable(myString) .map(Ints::tryParse) .orElse(0)
This is not a good way to convert an int to a string. Actually, you are not converting an int to a string, you are converting an int to a char. This will interpret the int as an ASCII character code and give you that char. It's dangerous (negative values, etc.) and overall just plain wrong. –
if the int value is 15, you can convert it to a binary as follows. int x = 15; Integer.toBinaryString(x); if you have the binary value, you can convert it into int value as follows. String binaryValue = "1010"; Integer.parseInt(binaryValue, 2);
String s = String.valueOf(i); String s = Integer.toString(i); Another more concise way is: String s = "" + i; See it working online: ideone. This is particularly useful if the reason you are converting the integer to a string is in order to concatenate it to another string, as it means you can omit the explicit conversion:
In Java, you really want to use Integer.toString to convert an integer to its corresponding String value. If you are dealing with just the digits 0-9, then you could use something like this: If you are dealing with just the digits 0-9, then you could use something like this:
The main adavantage is that there is a String.valueOf method for boolean, char, int, long, float, double and Object, so the same method name can be used to convert anything to a String. – JB Nizet Commented Dec 26, 2011 at 11:56
int someValue = 42; Now I want to convert that int value to a String. Which way is more efficient? // One String stringValue = Integer.toString(someValue); // Two String stringValue = String.valueOf(someValue); // Three String stringValue = someValue + ""; I am just curious if there is any real difference or one is better than the other?
Everytime I had to convert an intinto a String I picked either ""+aor Integer.toString(a). Now I wondered which way is faster, so I wrote a simple benchmark that calls function_1, function_2 and function_3 10000000 times and prints how long it takes to process the functions. Here are the functions:
It doesn't answer the conventional interpretation of the question: how to convert a string representation of a number into an integer value. Regardless, your int2str function stops if a byte is 0, which could be a legitimate element within the value, so the if ... break should be removed so you get a complete 4-byte value returned.