java 方法 示例

掃描器類的hasNextShort()方法 (Scanner Class hasNextShort() method)

Syntax:

句法：

public boolean hasNextShort();public boolean hasNextShort(int rad);

• hasNextShort() method is available in java.util package.

  hasNextShort()方法在java.util包中可用。

• hasNextShort() method is used to check whether this Scanner has next token in its input can be manipulated as a short value in the implicit radix or not.

  hasNextShort()方法用于檢查此掃描程序在其輸入中是否具有下一個標記，可以將其作為隱式基數(shù)中的short值進行操作。

• hasNextShort(int rad) method is used to check whether this Scanner has next token in its input can be manipulated as a short value in the explicit radix(rad) or not.

  hasNextShort(int rad)方法用于檢查此掃描程序在其輸入中是否具有下一個標記是否可以作為顯式基數(shù)(rad)中的short值進行操作。

• These methods may throw an exception at the time of representing input as a short value.

  在將輸入表示為短值時，這些方法可能會引發(fā)異常。

  IllegalStateException: This exception may throw when this Scanner is not opened.

  IllegalStateException ：如果未打開此掃描器，則可能引發(fā)此異常。

• These are non-static methods, it is accessible with class object & if we try to access these methods with the class name then we will get an error.

  這些是非靜態(tài)方法，可通過類對象訪問；如果嘗試使用類名稱訪問這些方法，則會收到錯誤消息。

Parameter(s):

參數(shù)：

• In the first case, hasNextShort(),

  在第一種情況下， hasNextShort() ，

  • It does not accept any parameter.

• In the second case, hasNextShort(int rad),

  在第二種情況下， hasNextShort(int rad) ，

  • int rad – represents the radix used to manipulate as a short value.
  • int rad –表示用作短值的基數(shù)。

Return value:

返回值：

In both the cases, the return type of the method is boolean, it returns true when this Scanner next input as a short valid value otherwise it returns false.

在這兩種情況下，方法的返回類型是布爾值 ，當這種掃描儀下一個輸入的短有效值否則返回false返回true。

Example:

例：

// Java program is to demonstrate the example // of hasNextShort() method of Scannerimport java.util.*; import java.util.regex.*;public class HasNextShort {public static void main(String[] args) {String str = "Java Programming! 3 * 8= 24";Short val = 125;str = str + val;// Instantiates ScannerScanner sc = new Scanner(str);while (sc.hasNext()) {// By using hasNextShort() method is to// check whether this object next token// represents short or not in the default // radixboolean status = sc.hasNextShort();System.out.println("sc.hasNextShort(): " + status);// By using hasNextShort(radix) method is to// check whether this object next token// represents short in the given radix// or notstatus = sc.hasNextShort(4);System.out.println("sc.hasNextShort(2): " + status);sc.next();}// Scanner closedsc.close();} }

Output

輸出量

sc.hasNextShort(): false sc.hasNextShort(2): false sc.hasNextShort(): false sc.hasNextShort(2): false sc.hasNextShort(): true sc.hasNextShort(2): true sc.hasNextShort(): false sc.hasNextShort(2): false sc.hasNextShort(): false sc.hasNextShort(2): false sc.hasNextShort(): true sc.hasNextShort(2): false

翻譯自: https://www.includehelp.com/java/scanner-hasnextshort-method-with-example.aspx

java 方法 示例

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