java-synthetic-methods

What's the penalty for Synthetic methods?

别等时光非礼了梦想. 提交于 2019-12-28 02:12:06
问题 While developing a Java application under Eclipse I got the warning about "method/value accessed via a synthetic method". The solution was simply changing a private access modifier to a default level. That left me wondering: what's the penalty on using a synthetic method? There is some? I assume so as the compiler/Eclipse raises the warning, but it's something so relevant or something that could be safely ignored? I've not seen this information around here, so I'm asking. 回答1: Eclipse is

How can I avoid synthetic access compiler warning with inline-anonymous class declaration and what does it mean?

家住魔仙堡 提交于 2019-12-10 16:47:00
问题 I have the following code: public class SomeClass { //InterfaceUpdateListener is an interface private InterfaceUpdateListener listener = new InterfaceUpdateListener(){ public void onUpdate() { SomeClass.this.someMethod(); //complier complains on this line of code } }; private void someMethod() { //do something in here on an update event occuring } //other code to register the listener with another class... } My compiler in Eclipse complains that Access to enclosing method 'someMethod' from

Synthetic accessor method warning

岁酱吖の 提交于 2019-12-05 12:18:26
问题 I've made some new warning settings in eclipse. With these new settings I'm facing a strange warning. After reading I got to know what it is but couldn't find a way to remove it. Here is my problem with the sample code public class Test { private String testString; public void performAction() { new Thread( new Runnable() { @Override public void run() { testString = "initialize"; // ** } }); } } The line with * * gives me a warning in eclipse Read access to enclosing field Test.testString is

Synthetic accessor method warning

做~自己de王妃 提交于 2019-12-03 23:48:49
I've made some new warning settings in eclipse. With these new settings I'm facing a strange warning. After reading I got to know what it is but couldn't find a way to remove it. Here is my problem with the sample code public class Test { private String testString; public void performAction() { new Thread( new Runnable() { @Override public void run() { testString = "initialize"; // ** } }); } } The line with * * gives me a warning in eclipse Read access to enclosing field Test.testString is emulated by a synthetic accessor method. Increasing its visibility will improve your performance.

Inline function cannot access non-public-API: @PublishedApi vs @Suppress vs @JvmSynthetic

ε祈祈猫儿з 提交于 2019-11-27 22:50:39
In Kotlin, when I have a non-public member and an inline fun that calls it, there's a compilation error saying: Error:(22, 25) Kotlin: Public-API inline function cannot access non-public-API private fun f(): Unit defined in com.example I found several ways to call my function inside a public inline fun , but which is the best way to do it? Suppose I have a private fun f() { } . Then the options I found are: fun f() { } Just make it public. This is the baseline solution, but if the others turn out to have major disadvantages, this can end up the best one. @PublishedApi internal fun f() { }

What is the meaning of “static synthetic”?

别等时光非礼了梦想. 提交于 2019-11-27 14:18:22
I am looking at some disassembled code obtained from Java bytecode. I see some declaration as follows: .method static synthetic access$0()Lcom/package/Sample; I am not able to figure out what the synthetic or access$0 mean. Can someone please help me understand this part? Johan Sjöberg Synthetic field , (2) A compiler-created field that links a local inner class to a block's local variable or reference type parameter. See also The JavaTM Virtual Machine Specification (§4.7.6) or Synthetic Class in Java . In the java language, inner classes can access private members of their enclosing class.

Eclipse warning about synthetic accessor for private static nested classes in Java?

夙愿已清 提交于 2019-11-27 13:01:19
My coworker suggested making several of the Eclipse code-formatting and warning settings to be more rigorous. The majority of these changes make sense, but I get this one weird warning in Java. Here's some test code to reproduce the "problem": package com.example.bugs; public class WeirdInnerClassJavaWarning { private static class InnerClass { public void doSomething() {} } final private InnerClass anInstance; { this.anInstance = new InnerClass(); // !!! this.anInstance.doSomething(); } } // using "this.anInstance" instead of "anInstance" prevents another warning, // Unqualified access to the

What's the penalty for Synthetic methods?

女生的网名这么多〃 提交于 2019-11-27 05:15:47
While developing a Java application under Eclipse I got the warning about "method/value accessed via a synthetic method". The solution was simply changing a private access modifier to a default level. That left me wondering: what's the penalty on using a synthetic method? There is some? I assume so as the compiler/Eclipse raises the warning, but it's something so relevant or something that could be safely ignored? I've not seen this information around here, so I'm asking. McDowell Eclipse is warning you that you may be exposing information you think is private. Synthetic accessors can be

Inline function cannot access non-public-API: @PublishedApi vs @Suppress vs @JvmSynthetic

穿精又带淫゛_ 提交于 2019-11-26 23:14:21
问题 In Kotlin, when I have a non-public member and an inline fun that calls it, there's a compilation error saying: Error:(22, 25) Kotlin: Public-API inline function cannot access non-public-API private fun f(): Unit defined in com.example I found several ways to call my function inside a public inline fun , but which is the best way to do it? Suppose I have a private fun f() { } . Then the options I found are: fun f() { } Just make it public. This is the baseline solution, but if the others turn

What is the meaning of “static synthetic”?

ぐ巨炮叔叔 提交于 2019-11-26 16:40:04
问题 I am looking at some disassembled code obtained from Java bytecode. I see some declaration as follows: .method static synthetic access$0()Lcom/package/Sample; I am not able to figure out what the synthetic or access$0 mean. Can someone please help me understand this part? 回答1: Synthetic field, (2) A compiler-created field that links a local inner class to a block's local variable or reference type parameter. See also The JavaTM Virtual Machine Specification (§4.7.6) or Synthetic Class in Java