java构造函数

class Chongzai {
public static void main(String[] args)
{
int i1=3,i2=5;              //byte,short,char->int->long->float->double
char c1='a',charc3='b';
float f1=3.1f,f2=4.1f;
double d1=2.5,d2=3.8;
System.out.println(add(i1,i2));
System.out.println(add(c1,i1));
System.out.println(add(i1,f1));
System.out.println(add(f1,d2));
System.out.println(add(d1,i2));
System.out.println("'a'="+'a');
}

static int add(int i,int j)
{
return i+j;
}
static double add(double i,double j)
{
return i+j;
}
}