java valueof

Syntax:

句法：

    public static Short valueOf (short value);
public static Short valueOf (String value);
public static Short valueOf (String value, int radix's);

简短的类valueOf()方法 (Short class valueOf() method)

• valueOf() method is available in java.lang package.

  valueOf()方法在java.lang包中可用。

• valueOf(short value) method is used to represent Short object denoted by the given argument (value) is of short type.

  valueOf(short value)方法用于表示由给定参数表示的Short对象(value)是short类型。

• valueOf(String value) method is used to represent Short object holding the short value denoted by the given argument (value) is of String type.

  valueOf(String value)方法用于表示Short对象，该对象持有由给定参数(值)表示的short值是String类型。

• valueOf(String value, int radix's) method is used to represent a Short object holding the short value of the given argument (value) in the radix's given by the second argument.

  valueOf(String value，int radix's)方法用于表示一个Short对象，该对象持有第二个参数给定的基数中给定参数(值)的短值。

• valueOf(short value) method does not throw an exception at the time of returning a Short instance.

  在返回Short实例时， valueOf(short value)方法不会引发异常。

• Similarly, valueOf(String value), valueOf(String value, int radix's) method may throw a NumberFormatException at the time of returning an instance.

  同样，在返回实例时， valueOf(String value) ， valueOf(String value，int radix's)方法可能会引发NumberFormatException 。

  NumberFormatException: In this exception, if String does not contain a parsable number.

  NumberFormatException ：在此异常中，如果String不包含可解析的数字。

• These methods are the static methods, it is accessible with the class name too and, if we try to access these methods with the class object then also we will not get an error.

  这些方法是静态方法，也可以使用类名进行访问，而且，如果尝试使用类对象访问这些方法，那么也不会出错。

Parameter(s):

参数：

• In the first case, short value – represents the value of the short type.

  在第一种情况下， short值 –表示short类型的值。

• In the second case, String value – represents the value of String type.

  在第二种情况下， 字符串值 –表示字符串类型的值。

• In the third case, String value, int radix's – In this method first parameter value represents the value of String type in the radix's given by the second parameter.

  在第三种情况下， String值，int radix's –在此方法中，第一个参数值表示第二个参数给定的基数中String类型的值。

Return value:

返回值：

In the first case, the return type of this method is Short – it returns the Short representation of this short argument.

在第一种情况下，此方法的返回类型为Short-它返回此short参数的Short表示形式。

In the second case, the return type of this method is Short – it returns the Short representation of this String argument.

在第二种情况下，此方法的返回类型为Short-它返回此String参数的Short表示形式。

In the third case, the return type of this method is Short – it returns the Short representation of the String argument in the radix's given by the second argument.

在第三种情况下，此方法的返回类型为Short-它以第二个参数给定的基数形式返回String参数的Short表示形式。

Example:

例：

// Java program to demonstrate the example 
// of valueOf() method of Short class
public class ValueOfShortClass {
public static void main(String[] args) {
short s1 = 100;
short s2 = 200;
short s3 = 40;
short s4 = 20;
// Object initialization
Short ob1 = new Short(s1);
Short ob2 = new Short(s2);
Short ob3 = new Short(s3);
// Display ob1,ob2,ob3 values
System.out.println("ob1 :" + ob1);
System.out.println("ob2 :" + ob2);
System.out.println("ob3 :" + ob3);
// It returns Short object holding the value 
// denoted by the given short argument
Short value1 = ob1.valueOf(s3);
// String object initialization for valueOf(String s)
String s = "80";
// It returns Short object holding the value 
// denoted by the given String argument
Short value2 = ob2.valueOf(s);
// It returns Short object holding the value 
// denoted by the given String argument with radix 20
Short value3 = ob3.valueOf(s, s4);
// Display result values
System.out.println("ob1.valueOf(s3): " + value1);
System.out.println("ob2.valueOf(s): " + value2);
System.out.println("ob3.valueOf(s,s4): " + value3);
}
}

Output

输出量

ob1 :100
ob2 :200
ob3 :40
ob1.valueOf(s3): 40
ob2.valueOf(s): 80
ob3.valueOf(s,s4): 160

翻译自: https://www.includehelp.com/java/short-class-valueof-method-with-example.aspx

java valueof