大约有 30,000 项符合查询结果（耗时：0.0584秒） [XML]
How do I print a double value without scientific notation using Java?
I want to print a double value in Java without exponential form.
14 Answers
14
...
Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
I'd like to know the difference between the following in Java
11 Answers
11
...
Naming conventions for java methods that return boolean(No question mark)
...sing question mark at the end of method/function names in other languages. Java doesn't let me do this. As a workaround how else can I name boolean returning methods in Java? Using an is , has , should , can in the front of a method sound okay for some cases. Is there a better way to name such ...
Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
...
Why are you not able to declare a class as static in Java?
Why are you not able to declare a class as static in Java?
14 Answers
14
...
Does Java support default parameter values?
I came across some Java code that had the following structure:
24 Answers
24
...
How to sort by two fields in Java?
... As this question/ answer still gets linked, please note that with Java SE 8 this became much simpler. If there are getters you can write Comparator<Person> comparator = Comparator.comparing(Person::getName).thenComparingInt(Person::getAge);
– Puce
...
Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
... accessed (via get(key) only) from multiple threads. Is it safe to use a java.util.HashMap in this way?
12 Answers
...
Copying a HashMap in Java
...ashmap
Program for copy all elements from one hashmap to another
import java.util.HashMap;
public class CloneHashMap {
public static void main(String a[]) {
HashMap hashMap = new HashMap();
HashMap hashMap1 = new HashMap();
hashMap.put(1, "One");
...
Java equivalent of unsigned long long?
...unsigned integer, via unsigned long long int , or via uint64_t . Now, in Java longs are 64 bits, I know. However, they are signed.
...