字段是 Java 中的综合()方法，带有示例
原文:https://www . geeksforgeeks . org/field-issynamic-method-in-Java-with-examples/
java.lang.reflect.Field 的issynamic()方法用于检查 Field Object 是否为合成字段。如果该字段是合成字段，则函数返回 true，否则返回 false。
合成构造:合成构造是 Java 编译器为了内部目的而创建的类、字段和方法。
语法:
public boolean isSynthetic()
参数:此方法不接受任何东西。
返回:当且仅当该字段是 Java 语言规范定义的合成字段时，该方法返回 true 。
下面的程序说明了 isSynthetic()方法: 程序 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;
}
Output:
The Field is isSynthetic: false
程序 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());
}
}
}
Output:
Field public static final Java . time . day fweek Java . time . day fweek .星期一 为合成:假 Field public static final Java . time . day fweek Java . time . day fweek .星期二 为合成:假 Field public static final Java . time . day fweek Java . time . day fweek .星期三 为合成:假 Field public static final Java . time . day fweek Java . time . day fweek
参考文献:T2
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