Answers for "how can i use a scanner to take in int/strings in java"

48

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
  }}
Posted by: Guest on May-25-2020
0

java scanner string to int

Scanner scanner = new Scanner(System.in);
    while (true) {
        String input = scanner.next();
            try {
                int a = Integer.parseInt(input);
                if (a == 0) {
                    break;
                }
                System.out.println(Integer.parseInt(input) * 10);
            } catch (NumberFormatException e) {
                System.out.println("Invalid user input: " + input);
            }
        }
Posted by: Guest on October-14-2021

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