Java基础入门笔记-整数+小数+字符串+打印

package my;

public class HelloWorld
{

public static void main(String[] args)
{
//int 为4字节
int a=123;
int b=456;
System.out.println(a+"+"+b+"="+(a+b));

//double 为8字节
double c=123.456;
double d=456;	//其实为456.0
System.out.println(c+"+"+d+"="+(c+d));

//字符串型
String name="IT1995";
System.out.println("My name is "+name);
}

}