if, if-else, else ifpackage lesson02;import java.util.Scanner;public class Ex01_If1 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.print("정수를 입력하세요 : "); int number = sc.nextInt(); if(number > 0) { System.out.println("양수입니다"); } sc.close(); }}-------------------------------정수를 입력하세요5양수입니다packag..