package org.doudou.basicjava;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
test01();
}
/*
test01 运行结果:
1 2 good
str1:1
str2:2
false
str3: good (注意,good前面有一个空格)
end
*/
/**
* 测试next()换行符问题
*
* 测试结果:
* next()方法在遇到有效字符前所遇到的空格、tab键、enter键都不能当作结束符,next()方法会自动将其去掉,
* 只有当next()方法遇到有效字符之后,next()方法才将其后输入的空格键、Tab键或Enter键等视为结束符,结束符及其之后内容会留在缓存中
*/
private static void test01() {
Scanner sc = new Scanner(System.in);
String str1 = sc.next();
System.out.println("str1:"+str1);
String str2 = sc.next();
System.out.println("str2:"+str2);
String str3 = sc.nextLine();
System.out.println("".equals(str3));
System.out.println("str3:"+str3);
System.out.println("end");
sc.close();
}
/**
* 测试nextLine()换行符问题
*
* 测试结果:
* nextLine()会把末尾的换行符吃掉
*
*/
private static void test02() {
Scanner sc = new Scanner(System.in);
String str1 = sc.nextLine();
System.out.println("str1:"+str1);
String str2 = sc.nextLine();
System.out.println("str2:"+str2);
int int1 = sc.nextInt();
System.out.println("int1:"+int1);
sc.close();
}
}