请问是哪里出现了错误？

//先理解数据类型，数据类型要一样，int为整数类型，String为字符串类型，就是: "a"，类似加双引号的，输出为a。

public class Solution { public static void main(String[] args) { //在此编写你的代码 int a =5; int b =7; System.out.println(a+b); System.out.println(a*b); } }

package zh.codegym.task.task02.task0207; /* 计算器的一部分 */ public class Solution { public static void main(String[] args) { int a = 5; int b = 7; int c = 5 +7; int d = 5 * 7; System.out.println(c); System.out.println(d); } }

int a=5 ; int b=7; System.out.println(a+b); System.out.println(a*b); String variables are defined within " " but certainly 5 + 7 within the string would be printed as 57 not 12. You could for example write int x = a + b; int y = a * b; anx then print them out. Change System.out.print to System.out.println because print prints the results in one line and println in a new line