Java - Short parseShort() 方法

Java Short parseShort() 方法用于将给定的字符串值解析（转换）为 Short 对象。此方法将给定的字符串解析为带符号的十进制短整型。

提供的字符串中的字符必须全部为十进制数字，除了第一个字符，它可以是 ASCII 减号 ('-') 或 ASCII 加号 ('+') ('u002B')，分别表示负值或正值。

语法

以下是 Java Short parseShort() 方法的语法：-

public static short parseShort(String s) throws NumberFormatException
or,
public static short parseShort(String s, int radix) throwsNumberFormatException

参数

s - 这是一个包含要解析的短整型表示形式的字符串。
radix - 这是解析 s 时使用的基数。

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返回值

此方法返回由字符串参数在指定基数中表示的短整型值。

从包含正值的字符串获取短整型值示例

我们可以使用 parseShort() 方法传递正值。结果将是给定字符串值的等效短整型值。

以下示例显示了 Java Short parseShort() 方法的使用。这里我们通过创建一个 Short 对象 's' 并返回字符串变量 'str' 表示的短整型值。

Open Compiler

package com.tutorialspoint;

public class ShortDemo {
   public static void main(String[] args) {
      Short s = new Short("6");
      
      // returns the short value represented by the string argument
      String str = "50";
      short retval = s.parseShort(str);
      System.out.println("Value = " + retval);
   }
}

输出

让我们编译并运行上述程序，这将产生以下结果：-

Value = 50

从包含正值的字符串获取短整型值示例

在下面给出的示例中，声明了三个字符串变量，即 's1'、's2'、's3'，并为其分配了值。通过使用 parseShort() 方法，传递了与字符串相对应的短整型值以及一些操作，如连接、加法、乘法和除法。然后返回其对应的短整型值：-

Open Compiler

package com.tutorialspoint;

public class ShortDemo {
   public static void main(String[] args) {
      String s1 = "8";
      String s2 = "13";
      String s3 = "4";
      
      // concatenating two strings instead of adding it
      Short d1 = Short.parseShort(s1 + s2 + s3);
      System.out.println("The sum is =" + d1);
      System.out.println("The sum is =" + (Short.parseShort(s1) + Short.parseShort(s2) + Short.parseShort(s3)));
      System.out.println("The Product is =" + (Short.parseShort(s1) * Short.parseShort(s2) * Short.parseShort(s3)));
      System.out.println("The division is =" + (Short.parseShort(s2) / Short.parseShort(s3)));
      System.out.println("The division =" + (Short.parseShort(s1) / Short.parseShort(s2)));
   }
}

输出

以下是上述代码的输出：-

The sum is =8134
The sum is =25
The Product is =416
The division is =3
The division =0

从包含无效值的字符串获取短整型值时遇到异常示例

当将字母数字值作为参数传递给此方法时，它会返回 NumberFormat Exception。

在下面的代码中，传递的字符串值不包含可解析的值，因此它会抛出异常错误：-

Open Compiler

package com.tutorialspoint;

import java.util.Scanner;

public class ShortDemo {
   public static void main(String[] args) {
      String s = "Deepak@21";
      Short d = Short.parseShort(s);
      System.out.println("The equivalent short value is = " + d);
   }
}

NumberFormatException

上述代码抛出异常错误，如下面的输出所示：-

Exception in thread "main" java.lang.NumberFormatException: For input string: "Deepak@21"
      at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
      at java.base/java.lang.Integer.parseInt(Integer.java:668)
      at java.base/java.lang.Short.parseShort(Short.java:137)
      at java.base/java.lang.Short.parseShort(Short.java:163)
      at com.tutorialspoint.ShortDemo.main(ShortDemo.java:6)

从具有给定基数的字符串获取短整型值示例

以下是一个示例，其中检索了指定字符串（带基数）的带符号十进制短整型值：-

Open Compiler

package com.tutorialspoint;

public class ShortDemo {
   public static void main(String[] args) {
      String str = "1000";
      
      // returns signed decimal short value of string
      short shortValue = Short.parseShort(str);  
      
      // prints signed decimalshort value
      System.out.println("Signed decimal short value for given String is = " + shortValue);  	 
      
      // returns the string argument as a signed short in the radix
      shortValue = Short.parseShort(str,2);
      System.out.println("Signed decimal short value for specified String with radix 2 is = " + shortValue);
      
      // returns the string argument as a signed short in the radix
      shortValue = Short.parseShort("11",8);
      System.out.println("Signed decimal short value for specified String with radix 8 is = " + shortValue);
   }
}

输出

执行上述代码时，我们将获得以下输出：-

Signed decimal short value for given String is = 1000
Signed decimal short value for specified String with radix 2 is = 8
Signed decimal short value for specified String with radix 8 is = 9

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