大约有 8,000 项符合查询结果（耗时：0.0185秒） [XML]
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 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
...
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");
...
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
...
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.
...
What does a just-in-time (JIT) compiler do?
...guage but yes, purely interpreted code (without any JITting) is slow. Even Java bytecode without a JITter is really slow.
– Mark Cidade
Sep 18 '08 at 22:07
49
...
JAVA线程池管理及分布式HADOOP调度框架搭建 - 人工智能(AI) - 清泛IT社区，...
...变成多线程程序呢？不同的语言有不同的实现，这里说下java语言的实现多线程的两种方式：扩展java.lang.Thread类、实现java.lang.Runnable接口。
先看个例子，假设有100个数据需要分发并且计算。看下单线程的处理速度：package thread;
...