java generic array creation error

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Java array declaration, creation, and initialization

One-dimensional array declaration method:Type var []; or type [] var; When declaring an array, you cannot specify its length (number of elements in the array ), In Java, use the keyword new to create an array object in the format:Array name = new

Java array declaration, creation, and initialization Basics

One-dimensional array declaration method: Type var []; or type [] var;When declaring an array, you cannot specify its length (number of elements in the array ),In Java, use the keyword new to create an array object in the format:Array name = new

Kafka Java creation producer error: Invalid partition given with record:1 are not in the range [0...1]

Reference: https://www.jianshu.com/p/9e72b3942c59The reason is Num.patitions = 1 in the Kafka cluster kafka/config/server.properties file. The partition default value needs to be modified.Partitions the number of partitions nodes created by default when creating topic, only the newly created topic takes effect, and all tries to set a reasonable value at the time of project planning. You can also dynamically scale through the command line../bin/kafka-topics. sh --zookeeper localhost:21812 --topi

Java Error hints-------array subscript out of bounds __java error hint

Error tip: Prompt for error: Exception in thread "main" java.lang.arrayindexoutofboundsexception:2 meaning is array subscript out of boundsAt Array.main (array.java:30) Import Java.util.Scanner; public class Array {public static void Main (string[] args){int [] nian=new int[2];int i=0;Scanner scan=new Scanner (s

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