package yun;
public class MAIN {
public static void main(String args[])
{
int i=10;
System.out.println("i++="+(i++)+"\t"+"++i="+(++i));
System.out.println("i--="+(i--)+"\t"+"--i="+(--i));
int a=5;
int b=4;
int c=5/4;
double e=5.0d;
double d=4.0d;
double f=5.0/4.0;
System.out.println("5/4="+c+"\t"+"5.0/4.0="+f);
String s1="GXM";
String s2="boy";
String s3=s1+s2;
System.out.println("s1+s2="+s3);
if(s1 instanceof String)
System.out.println("s1 is String");
else
System.out.println("s1 is not String" );
boolean bool=true;
int m=bool?5:3;
System.out.println(m);
}
}
输出:
i++=10 ++i=12
i--=12 --i=10
5/4=1 5.0/4.0=1.25
s1+s2=GXMboy
s1 is String
5