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Java ParsePosition setIndex()用法及代码示例

java.text.ParsePosition类的setIndex()方法用于设置此ParsePositon对象的当前解析位置。

用法:

public void setIndex(int index)

参数:此方法采用整数索引,将在该整数索引处设置当前解析位置。


返回值:此方法无返回值。

下面是说明setIndex()方法的示例:

范例1:

// Java program to demonstrate 
// setIndex() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new ParsePosition Object 
            ParsePosition pos 
                = new ParsePosition(1); 
  
            // set index for current 
            // Parse Position object 
            // using setIndex() method 
            pos.setIndex(3); 
  
            // getting the current 
            // ParsePosition of 
            int i = pos.getIndex(); 
  
            // display result 
            System.out.println( 
                "current parse position:"
                + Integer.toString(i)); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println(e); 
        } 
    } 
}
输出:
current parse position:3

范例2:

// Java program to demonstrate 
// setIndex() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new ParsePosition Object 
            ParsePosition pos 
                = new ParsePosition(500); 
  
            // set index for current 
            // Parse Position object 
            // using setIndex() method 
            pos.setIndex(30); 
  
            // getting the current 
            // ParsePosition of 
            int i = pos.getIndex(); 
  
            // display result 
            System.out.println( 
                "current parse position:"
                + Integer.toString(i)); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println(e); 
        } 
    } 
}
输出:
current parse position:30

参考: https://docs.oracle.com/javase/9/docs/api/java/text/ParsePosition.html#setIndex-int-



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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 ParsePosition setIndex() method in Java with Example。非经特殊声明,原始代码版权归原作者所有,本译文的传播和使用请遵循“署名-相同方式共享 4.0 国际 (CC BY-SA 4.0)”协议。