public class KY2_1 { public static void main(String[] args) { byte b=0x55; short s=0x55ff; int i=1000000; long l=0xffffL; char c='a'; float f=0.23F; double d=0.7E-3; boolean B=true; String S="这是字符串类数据类型"; System.out.println("字节型变量 b = "+b); System.out.println("短整型变量 s = "+s); System.out.println(" 整型变量 i = "+i); System.out.println("长整型变量 l = "+l); System.out.println("字符型变量 c = "+c); System.out.println("浮点型变量 f = "+f); System.out.println("双精度变量 d = "+d); System.out.println("布尔型变量 B = "+B); System.out.println("字符串类对象 S = "+S); } }各数据类型如下:
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