Java中的 CollationElementIterator setOffset() 方法及示例

Java.text.CollationElementIterator类的setOffset()方法用于将迭代器的光标设置为作为参数传递的特定索引。

句法：

public void setOffset(int newOffset)

参数：此方法采用整数值 newOffset必须设置光标。

返回值：此方法没有任何返回值。

以下是说明setOffset()方法的示例：

示例 1：

Java

// Java program to demonstrate
// setOffset() method
 
import java.text.*;
import java.util.*;
import java.io.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing testString
        String test = "Code Geeks 123";
 
        // creating and initializing
        // RuleBasedCollator object
        RuleBasedCollator rbc
            = (RuleBasedCollator)(Collator.getInstance());
 
        // creating and initializing
        // CollationElementIterator
        CollationElementIterator cel
            = rbc.getCollationElementIterator(test);
 
        // setting offset to index 4
        // using setOffset() method
        cel.setOffset(4);
 
        // display the result
        System.out.println("current offset is "
                           + cel.getOffset());
    }
}

输出：

current offset is 4

示例 2：

Java

// Java program to demonstrate
// setOffset() method
 
import java.text.*;
import java.util.*;
import java.io.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing testString
        String test = "GeeksForGeeks";
 
        // creating and initializing
        // RuleBasedCollator object
        RuleBasedCollator rbc
            = (RuleBasedCollator)(Collator.getInstance());
 
        // creating and initializing
        // CollationElementIterator
        CollationElementIterator cel
            = rbc.getCollationElementIterator(test);
 
        // after call of setOffset() method
        // all next() method will become redundent
        cel.next();
        cel.next();
        cel.next();
        cel.next();
 
        // setting cursor of iterator to index 0
        // using setOffset() method
        cel.setOffset(0);
 
        // display the result
        System.out.println("current offset is "
                           + cel.getOffset());
    }
}

输出：

current offset is 0

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