Java中的 Collator setDecomposition() 方法与示例

Java.text.Collator 类的setdecomposition()方法用来设置这个collator 的分解方式。
句法：

public void setDecomposition(int decompositionMode)

参数：此方法以整数值作为参数，表示此整理器的等效分解模式。
返回值：此方法没有任何返回值。
下面是说明setDecomposition()方法的示例：
示例 1：

输出：

decompostiton mode is :- CANONICAL_DECOMPOSITION

示例 2：

Java

// Java program to demonstrate
// setDecomposition() 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);
 
            // setting decomposition mode
            // into the Collator object
            // using setDecomposition() method
            col.setDecomposition(
                Collator.CANONICAL_DECOMPOSITION);
 
            // getting decomposition mode
            int mode = col.getDecomposition();
 
            // display result
            if (mode == 0)
                System.out.println(
                    "decompostiton mode"
                    + " is :- NO_DECOMPOSITION");
            else if (mode == 1)
                System.out.println(
                    "decompostiton mode is"
                    + " :- CANONICAL_DECOMPOSITION");
            else
                System.out.println(
                    "decompostiton mode is "
                    + ":- FULL_DECOMPOSITION. ");
        }
 
        catch (ClassCastException e) {
 
            System.out.println("Exception thrown : " + e);
        }
        catch (ParseException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出：

decompostiton mode is :- FULL_DECOMPOSITION. 

参考： https://docs.oracle.com/javase/9/docs/api/ Java/text/Collator.html#setDecomposition-int-