java-compiler-api | 易学教程

android studio with Java compiler error: string too large to encode using UTF-8 written instead as 'STRING_TOO_LARGE'

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问题 When I clean the android project in android studio, the error happen, I have backed to previous commit or different branch, which works find couple days ago, but has this error now. I have checked this question and there is not large image or strings added for my project. STRING_TOO_LARGE String in Kothlin 回答1: For the time being, you can downgrade Gradle version to resolve this issue. Use gradle 3.1 version like 3.1.3 below. classpath 'com.android.tools.build:gradle:3.1.3' 回答2: I had

How to set classpath when I use javax.tools.JavaCompiler compile the source?

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I use the class javax.tools.JavaCompiler (jdk6) to compile a source file, but the source file depends on some jar file. How to set the classpath of the javax.tools.JavaCompiler ? The javax.tools.JavaCompiler#getTask() method takes an options parameter that allows to set compiler options. The following message describes an easy way to set them in order to access the calling program's classpath: You need to configure the standard java file manager to know about the jar files(s) - you use the compiler options argument to do that. By default the java compiler object only seems to know about the

Is it possible to programmatically compile java source code in memory only?

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问题 I have found many references explaining how to programmatically compile a Java class using the JavaCompiler class: JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); int result = compiler.run(null, null, null, \"a_file_name\"); However, I would like to know if there is an open source library that let me compile source code generated programmatically (therefore without a src file being involved) and generate some byte code in an output stream (without generating a class file in the

Null Pointer Exception while using Java Compiler API

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问题 MyClass.java: package test; public class MyClass { public void myMethod(){ System.out.println(\"My Method Called\"); } } Listing for SimpleCompileTest.java that compiles the MyClass.java file. SimpleCompileTest.java: package test; import javax.tools.*; public class SimpleCompileTest { public static void main(String[] args) { String fileToCompile = \"test\" + java.io.File.separator +\"MyClass.java\"; JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); int compilationResult = compiler

Compile code fully in memory with javax.tools.JavaCompiler [duplicate]

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问题 This question already has answers here : How do you dynamically compile and load external java classes? [duplicate] (2 answers) Closed 2 years ago . I\'m using the JavaCompiler from the javax.tools package (JDK 1.7) to compile some stuff on the fly, like this: compiler.run(null, null, \"-cp\", paths, \"path/to/my/file.java\"); It works but I would like to do it all in memory (e.g. pass a string with the code, not the source file, and get the byte code back not a .class file). I found that