Java starts from zero 10 (common methods for arrays class arrays)

First, arrays class common methods

Second, a simple example

 PackageCom.pb.demo1;Importjava.util.Arrays;/** Several common methods in Arrays tool class * 1.copyof * 2.toString * 3.equals * 4.sort * 5.fill * 6.binarySearch*/ Public classArraystest { Public Static voidMain (string[] args) {String [] arry1={"Beijing", "Shanghai", "Chongqing", "Shenzhen"}; String [] Arry2=arrays.copyof (Arry1, 4); //copy copyofSystem.out.println ("Arry2 is:" +arrays.tostring (Arry2)); //Compare equalsSystem.out.println ("Arry1 and Arry2 are equal:" +arrays.equals (Arry1, Arry2)); //sort the Arry1Arrays.sort (Arry1); //toStringSystem.out.println ("The value of the sorted Arry1:" +arrays.tostring (arry1)); //whether Arry1 is equal to Arry2 after sorting equalsSystem.out.println ("Arry1 and Arry2 are still equal after sorting" +arrays.equals (Arry1, Arry2)); //Filling FillArrays.fill (Arry2, "Guangzhou"); System.out.println ("The value of Arry2 after padding:" +arrays.tostring (Arry2)); //Query BinarySearch If the array has been sorted before it can be usedSystem.out.println ("Chongqing's position in Arry1:" +arrays.binarysearch (Arry1, "Chongqing"))); }}

Results:

Arry2 is: [Beijing, Shanghai, Chongqing, Shenzhen]
Arry1 and Arry2 are equal: true
Value of the sorted arry1: [Shanghai, Beijing, Shenzhen, Chongqing]
Whether Arry1 and Arry2 are still equal after sorting false
Value after padding arry2: [Guangzhou, Guangzhou, Guangzhou]
Chongqing's location in Arry1:3

Java starts from zero 10 (common methods for arrays class arrays)