callable 与runnable 是相似的,可以被其他线程潜在的执行,但是runnable不会返回结果总是viod 以及不会抛出检测异常; /*** A task that returns a result and may throw an exception. * Implementors define a single method with no arguments called * {@codecall}. * * The {@codeCallable} interface is s...
A task that returns a result and may throw an exception. Implementors define a single method with no arguments calledcall. TheCallableinterface is similar toRunnable, in that both are designed for classes whose instances are potentially executed by another thread. ARunnable, however, does not retu...
对比Runnable,可以有返回值、有参数、重写call方法而不是run方法,而且需要指定返回值 class MyThread implements Callable<String> 而且重写call方法的返回值也应该与其保持一致。 使用步骤:资源类实现Callable接口,重写 T call() 方法,创建资源类实例mt ,然后new Thread(new FutureTask(mt)) .start()开启一个线程 举...
* A task that returns a result and may throw an exception. Implementors * define a single method with no arguments called call. The Callable * interface is similar to java.lang.Runnable, in that both are designed * for classes whose instances are potentially executed by another * thread. A...
A task that returns a result and may throw an exception. Implementors define a single method with no arguments called call. The Callable interface is similar to java.lang.Runnable, in that both are designed for classes whose instances are potentially executed by another thread. A Runnable, ...
Examples of functional interfaces includeRunnable,Callable, andActionListener.功能接口的示例包括Runnable,Callable和ActionListener。 Functionabove is a functional interface with just one method:apply.Function以上是只用一个方法的功能的接口:apply。It takes one argument and produces a result.它接受一个参数并产...
函数式接口是指只定义了一个抽象方法的接口,不包括default默认方法。 函数式接口的抽象方法的签名称为函数描述符,通过函数描述符可以很好得到Lambda表达式的签名。 常见的函数式接口有:Runnable, Callable, Comparator等。除此之外,Java8设计者还新增了一些比较抽象的函数式接口,比如:Predicate, Consumer, Supplier, Funct...
import java.util.*; import java.util.concurrent.*; import static java.util.Arrays.asList; public class Sums { static class Sum implements Callable<Long> { private final long from; private final long to; Sum(long from, long to) { this.from = from; this.to = to; } @Override public ...
position()); Callable<Integer> closure2 = (Callable<Integer>)kryo.readObject(input, ClosureSerializer.Closure.class); Serializing closures which do not implement Serializable is possible with some effort. Compression and encryption Kryo supports streams, so it is trivial to use compression or ...
·java.util.concurrent.Callable ·java.security.PrivilegedAction ·java.util.Comparator ·java.io.FileFilter ·java.nio.file.PathMatcher ·java.lang.reflect.InvocationHandler ·java.beans.PropertyChangeListener ·java.awt.event.ActionListener ·javax.swing.event.ChangeListener ...