相关疑难解决方法(0)

我希望返回该数字,只要它在一个限制内,否则返回限制的最大值或最小值.我可以用Math.min和组合来做到这一点Math.max.

public int limit(int value) {
    return Math.max(0, Math.min(value, 10));
}

我想知道是否存在我正在忽视的现有limit或range功能.
如果第三方图书馆很常见,欢迎加入(例如:Commons或Guava)

在线程"main"java.lang.NoClassDefFoundError:com/google/common/util/concurrent/FutureCallback中获取错误异常,同时在代码下运行.请告知我缺少哪个Jar文件.我正在从Eclipse IDE执行

package Datastax;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.Host;
import com.datastax.driver.core.Metadata;
import com.datastax.driver.core.Session;


public class DataStaxPOC {
   private Cluster cluster;

   public void connect(String node) {

       cluster = Cluster.builder().addContactPoint(node).build();

      Metadata metadata = cluster.getMetadata();

      System.out.printf("Connected to cluster: %s\n", metadata.getClusterName());

      for ( Host host : metadata.getAllHosts() ) {
         System.out.printf("Datatacenter: %s; Host: %s; Rack: %s\n",host.getDatacenter(), host.getAddress(), host.getRack());
      }
   }

   public void close() {
      cluster.shutdown();
   }

   public static void main(String[] args) {
      DataStaxPOC client = new DataStaxPOC();
      client.connect("127.0.0.1");
      client.close();
   }
}

当我尝试使用DataStax Java Driver从Java连接到Cassandra时,我收到此错误.关于SO我几乎没有回答.在这里它说com.google.common.util.concurrent.FutureFallback is deprecated在番石榴19.0,自20.0番石榴取出.因此,不要使用Guava 20.0或更高版本.

此外,我正在使用需要Guava 20.0的Pmml-Evaluator.如果我删除连接到Cassandra的代码,我的代码工作正常.那么,我现在如何解决这个问题呢？

Pom.xml依赖项:

<dependencies>

    <dependency>
      <groupId>org.jpmml</groupId>
      <artifactId>pmml-model</artifactId>
      <version>1.3.4</version>
   </dependency>

     <dependency>
        <groupId>com.beust</groupId>
        <artifactId>jcommander</artifactId>
        <version>1.48</version>
      </dependency>

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>3.8.1</version>
        <scope>test</scope>
    </dependency>

     <dependency>
        <groupId>org.jpmml</groupId>
        <artifactId>pmml-evaluator</artifactId>
        <version>1.3.4</version>
      </dependency>

   <dependency>
      <groupId>io.grpc</groupId>
      <artifactId>grpc-netty</artifactId>
      <version>1.1.2</version>
    </dependency>

  <dependency>
    <groupId>io.grpc</groupId>
    <artifactId>grpc-protobuf</artifactId>
    <version>1.1.2</version>
  </dependency>

  <dependency>
    <groupId>io.grpc</groupId>
    <artifactId>grpc-stub</artifactId>
    <version>1.1.2</version>
  </dependency>

  <dependency>
    <groupId>io.netty</groupId>
    <artifactId>netty-handler</artifactId>
    <version>4.1.8.Final</version>
</dependency>

  <dependency>
      <groupId>com.datastax.cassandra</groupId>
      <artifactId>cassandra-driver-core</artifactId>
      <version>3.1.4</version>
  </dependency>

  </dependencies> 

课程:

package com.cw.predictive;

import com.datastax.driver.core.Session;
import com.datastax.driver.core.Cluster;

public class CassandraSession {

    private static Session session; …