Java Integer shortValue()方法
Integer.shortValue()是java.lang的一个内置方法,用于返回短类型的Integer的值。
语法
public short shortValue()
参数 :该方法不接受任何参数。
返回值 :该方法在将该对象转换为short类型后,返回其代表的整数值。
下面的程序说明了Integer.shortValue()方法:
程序1: 对于正整数。
// Java program that demonstrates
// Integer.shortValue() method
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
Integer sh_object = new Integer(763);
// It will return the value of this Integer as a short type
short sh_value = sh_object.shortValue();
System.out.println(" The Value of sh_value = " + sh_value);
}
}
输出。
The Value of sh_value = 763
程序2: 对于负数。
// Java program that demonstrates
// Integer.shortValue() method
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
Integer sh_object = new Integer(-43);
// It will return the value of this Integer as a short type
short sh_value = sh_object.shortValue();
System.out.println(" The Value of sh_value = " + sh_value);
}
}
输出。
The Value of sh_value = -43
程序3: 对于一个十进制值和字符串。
注意: 当十进制值和字符串作为参数传递时,会返回错误信息。
// java program that demonstrates
// Integer.shortValue() method
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
// passing a decimal value
Integer sh_object = new Integer(27.51);
short sh_value = sh_object.shortValue();
System.out.println(" The Value of sh_value = " + sh_value);
// passing a string
Integer sh_object2 = new Integer("51");
short sh_value2 = sh_object2.shortValue();
System.out.println(" The Value of sh_value2 = " + sh_value2);
}
}
输出
prog.java:10: error: no suitable constructor found for Integer(double)
Integer sh_object = new Integer(27.51);
^
constructor Integer.Integer(int) is not applicable
(argument mismatch; possible lossy conversion from double to int)
constructor Integer.Integer(String) is not applicable
(argument mismatch; double cannot be converted to String)
1 error