1.关于Arrays 记得binarySearch方法返回的int 类型的数值的含义. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. 而且当查找数小于数组中任何一个数时返回-1 ,当查找数大于数组中任何一个数时返回 -(array.length+1) System.out.println(Arrays **…
In this tutorial we will see about debugging java applications using Eclipse. Debugging helps us to identify and fix defects in the application. We will focus on run-time issues and not compile time errors. There are command line debuggers like gdb a…
在命令行运行主函数时,后缀字符串,则会储存在args[]数组中,这种方法可以在程序运行时,借助Main函数传参 主类书写不规范见谅 ```java public class hello{ public static void main(String[] args){ System.out.println("hello,java"); System.out.println(args[0]); System.out.println(args[1]); System.out.println(…
http://www.onjava.com/pub/a/onjava/2001/05/30/optimization.htmlComparing the performance of LinkedLists and ArrayLists (and Vectors) (Page last updated May 2001, Added 2001-06-18, Author Jack Shirazi, Publisher OnJava). Tips: ArrayList is faster than…
