Java 中的 ParsePosition setErrorIndex()方法，示例
原文:https://www . geeksforgeeks . org/parse position-seterrorindex-method-in-Java-with-example/
java.text.ParsePosition 类的 setErrorIndex() 方法用于设置可能发生解析错误的索引。
语法:
public void setErrorIndex(int ei)
参数:该方法将整数 ei 作为可能出现解析错误的参数。
返回值:这个方法没有什么可返回的。
以下是说明设置错误索引()方法的示例:
例 1:
// Java program to demonstrate
// setErrorIndex() 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 the parsing error
// using setErrorIndex() method
pos.setErrorIndex(3);
// getting the current
// ParsePosition of
int i = pos.getErrorIndex();
// display result
System.out.println(
"index at which error occurred: "
+ Integer.toString(i));
}
catch (ClassCastException e) {
System.out.println(e);
}
}
}
输出:
index at which error occurred: 3
例 2:
// Java program to demonstrate
// setErrorIndex() 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 the parsing error
// using setErrorIndex() method
pos.setErrorIndex(3000);
// getting the current
// ParsePosition of
int i = pos.getErrorIndex();
// display result
System.out.println(
"index at which error occurred: "
+ Integer.toString(i));
}
catch (ClassCastException e) {
System.out.println(e);
}
}
}
输出:
index at which error occurred: 3000
参考:https://docs . Oracle . com/javase/9/docs/API/Java/text/parseposition . html # setErrorIndex-int-
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