1输出一个长整型 public class Long { public static void main(String[] args) { long l=123456789123; System.out.println("长整型变量为:"+l); } }
2输出一个单精度常量 public class Float { public static void main(String[] args) { float f=(float)2.4; System.out.println("单精度常量:"+f); } }
3输出一个布尔型 public class Boolean { public static void main(String[] args) { boolean b=true; b=false; System.out.println("布尔型:"+b); } }
4强制转换 public class Byte { public static void main(String[] args) { byte b=3; b=(byte)(b+200); System.out.println("强制转换:"+b); } }
5字符型加法运算 public class CharSum { public static void main(String[] args) { System.out.println('a'+1); System.out.println((char)('a'+1)); System.out.println((char)('你'+1)); } }
6 public class Overflow { public static void main(String[] args) { int big=0x7fffffff; System.out.println(big); } }
7计算 public class SumChar { public static void main(String[] args) { int x=20; x=x/2*100; System.out.println("得出:"+x); } }