java基础语法二

数据类型

package com.jp;
/变量未赋值就不能直接使用/
public class TypeDemo {
public static void main(String[] args) {
byte b = 5;
int a = 66;
double c = 1;
System.out.println(b);
System.out.println(a+b);
//隐式数据类型转换
//byte,short,char-->int-->long-->float-->double
//System.out.println(b+c);
//显式数据类型转换
System.out.println("----------");
float d = (float) (b+c);
System.out.println(d);
System.out.println("---------");
char e = ‘a‘;
int f = e+b;
System.out.println(f);
System.out.println((int)e);
}
}

java基础语法二

原文：https://www.cnblogs.com/chuangbian-feixue/p/10504660.html