Kotlin, how to retrieve the field value by reflective

inner class Version(val profile: Profile) {

 @JvmField val MINOR_VERSION = glGetInteger(GL_MINOR_VERSION )

 fun write(file: File? = null) {
 //file.printWriter().use {out -> out.pri }
 this::class. java.fields.forEach {
 println(it.isAccessible)
 println(it.getInt(it)) }
 }
}

false
Exception in thread "main" java.lang.IllegalArgumentException: Can not set final int field uno.caps.Caps$Version.MINOR_VERSION to java.lang.reflect.Field
 at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
 at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorI.java:171)
 at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAc cessorImpl.java:58)
 at sun.reflect.UnsafeQualifiedIntegerFieldAccessorImpl.getInt(UnsafeQualifiedIntegerFieldAccessorImpl.java:58)

class Reflector {
 val Foo = 1;

 fun printFields() {
 this:: class.memberProperties.forEach {
 if (it.visibility == KVisibility.PUBLIC) {
 println(it.name)
 println(it.getter.call(this))
 }
 }
 }
}

So I have hundreds of fields in several classes, and I want to top them Write some methods, they will automatically print each field and its corresponding value

Currently I have this:

inner class Version(val profile: Profile) {

 @JvmField val MINOR_VERSION = glGetInteger(GL_MINOR_VERSION)

 fun write(file: File? = null) {
 //file.printWriter ().use {out -> out.pri }
 this::class.java.fields.forEach {
 println(it.isAccessible)
 println(it.getInt(it)) }
 }
}

But this is what I got:

false
Exce ption in thread "main" java.lang.IllegalArgumentException: Can not set final int field uno.caps.Caps$Version.MINOR_VERSION to java.lang.reflect.Field
 at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl. java:167)
 at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
 at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:58)
 at sun.reflect .UnsafeQualifiedIntegerFieldAccessorImpl.getInt(UnsafeQualifiedIntegerFieldAccessorImpl.java:58)

Any ideas?

You can also use Kotlin attributes and Kotlin reflection classes instead of Java fields and Java reflection codes:

< /p>

class Reflector {
 val Foo = 1;

 fun printFields() {
 this::class.memberProperties.forEach {
 if ( it.visibility == KVisibility.PUBLIC) {
 println(it.name)
 println(it.getter.call(this))
 }
 }
} 
}