A simple example to read input from console using BufferedReader and InputStreamReader.

ReadInput.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class ReadInput {
	public static void main(String[] args)throws IOException {
		int age = 0;
		boolean married = false;
		String gender = null;

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		try {
			System.out.println("enter age:");
			age = Integer.parseInt(br.readLine());
			System.out.println("eneter married :");
			married = Boolean.parseBoolean(br.readLine());
			System.out.println("enter gender :");
			gender = br.readLine();
		}
		catch(Throwable e) {
			e.printStackTrace();
		}

		System.out.println("enter age:" +age);
		System.out.println("eneter married :" +married);
		System.out.println("enter gender :" +gender);
		perdetails (age, gender, married);
	}

	private static int perdetails(int age, String gender, boolean married) {
		int  premimum = 300;
		if((age < 25) && (gender.equals("male")) && (!married)){
			premimum = premimum + 1000;
		}
		else{
			if (married || gender.equals("female")){
				premimum = premimum - 100;
				if((age >= 46) && (age <= 65)){
					premimum = premimum - 150;
				}
			}
		}
		System.out.println("premimum" + premimum);
		return premimum;
	}
}