scanner in java
import java.util.Scanner; //Import Scanner in java
class classname{
public void methodname(){
Scanner s_name = new Scanner(System.in); //Scanner declaration
//Use Scanner object to take input
int val1 = s_name.nextInt(); //int
float val2 = s_name.nextFloat(); //float
double val3 = s_name.nextDouble(); //double
string name = s_name.nextLine(); //string
char ch = s_name.nextLine().charAt(0); //character
}}java to check if its a number scanner
Scanner sc = new Scanner(System.in);
int number;
do {
System.out.println("Please enter a positive number!");
while (!sc.hasNextInt()) {
System.out.println("That's not a number!");
sc.next(); // this is important!
}
number = sc.nextInt();
} while (number <= 0);
System.out.println("Thank you! Got " + number);Copyright © 2021 Codeinu
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