导入Scanner类:在代码的开头,使用import java.util.Scanner;语句导入Scanner类,以便在代码中使用它。 创建Scanner对象:使用Scanner scanner = new Scanner(System.in);语句创建一个Scanner对象,用于从标准输入读取数据。如果要从文件中读取数据,可以将System.in替换为文件路径。 使用Scanner读取输入:使用Scanner对象的各...
package Hello; import java.util.Scanner; public class hello_test { public static void main(String[] args) { // TODO Auto-generated method stub Scanner in=new Scanner(System.in);//创建扫描器 int[] numbers=new int[100];//数组 double sum=0; for(int i=0;i<5;i++)//输入5个数 { i...
java.util.Scanner input = new java.util.Scanner(System.in); System.out.print("Enter " + myList.length + " values: "); for (int i = 0; i < myList.length; i++) myList[i] = input.nextDouble(); 1. 2. 3. 4. 2.用随机值初始化数组 Math.random()的范围:[0.0, 1.0) for (in...
importjava.util.Scanner;publicclassScannerDemo {publicstaticvoidmain(String [] args){ Scanner sc=newScanner(System.in); String i=sc.next(); System.out.print(i); } } 匿名对象 1、有名对象即是引用类型变量,可以反复使用(Person p = new Person();) 2、匿名对象,没有引用变量,只能使用一次(new ...
import java.util.Scanner; class Median { public static void main(String args[]) { Scanner sc=new Scanner(System.in); System.out.println("enter a number"); int a=sc.nextInt(); double[] input=new double[a]; System.out.println("enter "+a+" elements"); for(int i=0;i...
1. Take 10 integer inputs from user and store them in an array and print them on screen. packagecom.codesdope;importjava.util.Scanner;publicclassStoreInputAndPrint{publicstaticvoidmain(String[] args){Scanners=newScanner(System.in);int[] my_array =newint[10];for(inti=0; i < my_array....
Initialize lrg with arr[0] i.e. first element in the array. If current element is greater than lrg, then set lrg to current element. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 importjava.util.Scanner; publicclassFinder ...
import java.util.HashMap; import java.util.Scanner; public class associativearrayhashmap{ public static void main(String[] args){ HashMap<String, String> empDept=new HashMap<>(); Scanner sc=new Scanner(System.in); empDept.put("Aarav","HR"); empDept.put("Priya","Engineering"); empDe...
importjava.util.Scanner;publicclassExArrayFindSecondSmallest{publicstaticvoidmain(String[]args){// Intialising the variablesintn,min;Scanner Sc=newScanner(System.in);// Enter the number of elements.System.out.print("Enter number of elements : ");n=Sc.nextInt();// creating an array.inta[]...
import java.io.FileInputStream; import java.io.IOException; import java.util.Scanner; public class ReadBytes { public static void main(String[] args) { try { Scanner KB = new Scanner(System.in); // KB is the object of Scanner class which takes the input. System.out.print("Enter ...