Java Collator getCollationKey()用法及代码示例

java.text.Collator类的getCollationKey()方法用于获取从传递给它的字符串转换而来的一系列位。

用法:

public abstract CollationKey
       getCollationKey(String source)

参数：此方法接受字符串对象作为参数。

返回值：此方法返回从传递给它的字符串转换而来的一系列位。

下面是说明getCollationKey()方法的示例：

范例1：

// Java program to demonstrate 
// getCollationKey() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new simple rule 
            String simple 
                = "< a < b < c < d"; 
  
            // Creating and initializing 
            // new RuleBasedCollator Object 
            RuleBasedCollator col 
                = new RuleBasedCollator(simple); 
  
            // getting sereis of bits 
            // using getCollationKey() mehtod 
            CollationKey key 
                = col.getCollationKey("Geek"); 
  
            // display result 
            System.out.println( 
                "Series of bits are:- "
                + key.getSourceString()); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
        catch (ParseException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

输出：

Series of bits are:- Geek

范例2：

// Java program to demonstrate 
// getCollationKey() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // Collator Object 
            Collator col 
                = Collator.getInstance(Locale.UK); 
  
            // getting sereis of bits 
            // using getCollationKey() mehtod 
            CollationKey key 
                = col.getCollationKey("CodeBlock"); 
  
            // display result 
            System.out.println( 
                "Series of bits are:- "
                + key.getSourceString()); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

输出：

Series of bits are:- CodeBlock

参考： https://docs.oracle.com/javase/9/docs/api/java/text/Collator.html#getCollationKey-java.lang.String-

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Collator getCollationKey() method in Java with Example。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。