java.lang.reflect.Field的isSynthetic()方法用於檢查Field Object是否為合成字段。如果該字段是合成字段,則該函數返回true,否則它將返回false。
合成構造:合成構造是Java編譯器為內部目的而創建的類,字段和方法。
用法:
public boolean isSynthetic()
參數:此方法接受不接受任何內容。
返回:僅當此字段是Java語言規範定義的綜合字段時,此方法才返回true。
以下示例程序旨在說明isSynthetic()方法:
示例1:
// Java program to illustrate isSynthetic() method
import java.lang.reflect.Field;
import java.time.Month;
public class GFG {
public static void main(String[] args)
throws Exception
{
// Get field object
Field field
= Numbers.class.getField("value");
// check field is synthetic or not
System.out.println(
"The Field is isSynthetic: "
+ field.isSynthetic());
}
}
// sample Numbers class
class Numbers {
// static short value
public static long value = 3114256;
}
The Field is isSynthetic: false
示例2:
// Java program to illustrate isSynthetic() method
import java.lang.reflect.Field;
import java.time.DayOfWeek;
public class GFG {
public static void main(String[] args)
throws Exception
{
// Get field object of Month class
Field[] fields
= DayOfWeek.class
.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
// print name of Fields
System.out.println(
"The Field "
+ fields[i].toString()
+ "\n is isSynthetic:"
+ fields[i].isSynthetic());
}
}
}
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.MONDAY
is isSynthetic:false
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.TUESDAY
is isSynthetic:false
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.WEDNESDAY
is isSynthetic:false
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.THURSDAY
is isSynthetic:false
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.FRIDAY
is isSynthetic:false
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.SATURDAY
is isSynthetic:false
The Field public static final java.time.DayOfWeek java.time.DayOfWeek.SUNDAY
is isSynthetic:false
The Field private static final java.time.DayOfWeek[] java.time.DayOfWeek.ENUMS
is isSynthetic:false
The Field private static final java.time.DayOfWeek[] java.time.DayOfWeek.$VALUES
is isSynthetic:true
參考文獻: https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Field.html#isSynthetic–java
相關用法
- Java Constructor isSynthetic()用法及代碼示例
- Java Class isSynthetic()用法及代碼示例
- Java Field set()用法及代碼示例
- Java Field get()用法及代碼示例
- Java Field getLong()用法及代碼示例
- Java Field getInt()用法及代碼示例
- Java Field getModifiers()用法及代碼示例
- Java Field getType()用法及代碼示例
- Java Field getByte()用法及代碼示例
- Java Field getDouble()用法及代碼示例
- Java Field getFloat()用法及代碼示例
- Java Field getDeclaredAnnotations()用法及代碼示例
- Java Field equals()用法及代碼示例
- Java Field getGenericType()用法及代碼示例
- Java Field getBoolean()用法及代碼示例
注:本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 Field isSynthetic() method in Java with Examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。