Java Guava Splitter omitEmptyStrings()用法及代码示例

方法omitEmptyStrings()返回一个拆分器，该拆分器的行为与此拆分器相同，但会自动从结果中忽略空字符串。例如，Splitter.on('，').omitEmptyStrings().split(“，a ,,, b，c ,,”)返回仅包含[“a”，“b”，“c”]的可迭代项。

用法:

public Splitter omitEmptyStrings()

返回值：此方法返回具有所需配置的拆分器。

Note: If either trimResults option is also specified when creating a splitter, that splitter always trims results first before checking for emptiness. So, for example,

Splitter.on(‘:’).omitEmptyStrings().trimResults().split(“:::“)

returns an empty iterable.

以下示例说明了omitEmptyStrings()方法的用法方式：

范例1：

// Java code to show implementation of 
// omitEmptyStrings() method 
// of Guava's Splitter Class 
  
import com.google.common.base.Splitter; 
import java.util.List; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
  
        // Creating a string variable 
        String str = "geeks,,  for,,,  geeks,, noida,,, classes"; 
        System.out.println("String with empty strings:\n"
                           + str); 
  
        // Using omitEmptyStrings() method. 
        // Two delimiters sometimes occur right next 
        // to each other. This means an empty entry. 
        // But often in splitting, we don't want 
        // to keep empty entries. 
        List<String> myList = Splitter.on(', '). 
         trimResults().omitEmptyStrings().splitToList(str); 
  
        System.out.println("\nString with empty"
                           + " strings removed:\n"
                           + myList); 
    } 
}

输出：

String with empty strings:
geeks,,  for,,,  geeks,, noida,,, classes

String with empty strings removed:
[geeks, for, geeks, noida, classes]

范例2：

// Java code to show implementation of 
// omitEmptyStrings() method 
// of Guava's Splitter Class 
  
import com.google.common.base.Splitter; 
import java.util.List; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
        // Creating a string variable 
        String str = "Hello..$.$ everyone..$& $ what's up..?"; 
        System.out.println("String with empty strings:\n"
                           + str); 
  
        // Using omitEmptyStrings() method. 
        // Two delimiters sometimes occur right next 
        // to each other. This means an empty entry. 
        // But often in splitting, we don't want 
        // to keep empty entries. 
        List<String> myList = Splitter.on('.'). 
            trimResults().omitEmptyStrings().splitToList(str); 
  
        System.out.println("\nString with empty"
                           + " strings removed:\n"
                           + myList); 
    } 
}

输出：

String with empty strings:
Hello..$.$ everyone..$& $ what's up..?

String with empty strings removed:
[Hello, $, $ everyone, $& $ what's up, ?]

相关用法

注：本文由纯净天空筛选整理自Sahil_Bansall大神的英文原创作品 Splitter omitEmptyStrings() method | Guava | Java。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。