Integer class has static method toString () - you can use it: int i = 1234; String str = Integer.toString(i); Returns a String object representing the specified integer. The argument is …

790 For example, here are two ways: Integer x = Integer.valueOf(str); // or int y = Integer.parseInt(str); There is a slight difference between these methods: valueOf returns a …

Nov 5, 2010 · If you say ""+i, Java creates a StringBuilder object, appends an empty string to it, converts the integer to a string, appends this to the StringBuilder, then converts the …

456 I like how Java has a Map where you can define the types of each entry in the map, for example <String, Integer>. What I'm looking for is a type of collection where each element in …

Mar 9, 2010 · 46 There is also the java.lang.Integer.toString (int i, int base) method, which would be more appropriate if your code might one day handle bases other than 2 (binary). Keep in …

Sep 27, 2010 · What are the alternative methods for converting and integer to a string?

Jun 25, 2009 · There are many ways of converting a String to an Integer object. Which is the most efficient among the below: Integer.valueOf() Integer.parseInt() …

String s = list.stream().map(e -> e.toString()).reduce("", String::concat); Explanation: map converts Integer stream to String stream, then its reduced as concatenation of all the elements. Note: …

May 7, 2015 · If you are concerned whether you can actually parse the string into an int or long you would also need to check if the integer the string represents actually fits into those data …

Java Caches the Integer objects in a certain range, which is generally [-128, 127], in which case, it will not create a new Integer object when you assign an integer literal to an Integer reference, …