04输入输出与Scanner
基本输入输出与Scanner
输入
输出
package com.ahabest.demo;
SRE实战 互联网时代守护先锋，助力企业售后服务体系运筹帷幄！一键直达领取阿里云限量特价优惠。public class Test {
public static void main(String[] args) {
System.out.print("print\n");
System.out.printf("printf\n");
System.out.println("println");
}
}
Scanner类
package com.ahabest.demo;
import java.util.Scanner;
//next以空格结束判断
public class ScannerTest {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
if(sc.hasNext()) {
String st = sc.next();
System.out.println(st);
}
sc.close();
}
}
package com.ahabest.demo;
import java.util.Scanner;
//nextLine以回车结束判断
public class ScannerTest {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
if(sc.hasNextLine()) {
String st = sc.nextLine();
System.out.println(st);
}
sc.close();
}
}
