java.util.Scanner類的delimiter()方法返回此Scanner當(dāng)前用于匹配定界符的Pattern。

用法:

public Pattern delimiter()

返回值：該函數(shù)返回掃描儀的定界圖案。

以下示例程序旨在說明上述功能：

示例1:

// Java program to illustrate the

// delimiter() method of Scanner class in Java

import java.util.*;

public class GFG1 {

public static void main(String[] argv)

throws Exception

{

String s = "Geeksforgeeks has Scanner Class Methods";

// create a new scanner

// with the specified String Object

Scanner scanner = new Scanner(s);

// prints the next line of the string

System.out.println("Scanner String: \n"

+ scanner.nextLine());

// print the delimiter this scanner is using

System.out.println("\nDelimiter being used in Scanner: "

+ scanner.delimiter());

// Close the scanner

scanner.close();

}

}

輸出：

Scanner String:

Geeksforgeeks has Scanner Class Methods

Delimiter being used in Scanner: \p{javaWhitespace}+

示例2:

// Java program to illustrate the

// delimiter() method of Scanner class in Java

import java.util.*;

public class GFG1 {

public static void main(String[] argv)

throws Exception

{

String s = "Geeksforgeeks.has.Scanner.Class.Methods";

// create a new scanner

// with the specified String Object

Scanner scanner = new Scanner(s);

// Set the delimiter to "."

scanner.useDelimiter(".");

// prints the next line of the string

System.out.println("Scanner String: \n"

+ scanner.nextLine());

// print the delimiter this scanner is using

System.out.println("\nDelimiter being used in Scanner: "

+ scanner.delimiter());

// Close the scanner

scanner.close();

}

}

輸出：

Scanner String:

Geeksforgeeks.has.Scanner.Class.Methods

Delimiter being used in Scanner: .

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