Compiler Info : Java Compiler « Development « Java Tutorial

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2. Development
3. Java Compiler

import java.util.Set;

import javax.lang.model.SourceVersion;
import javax.tools.JavaCompiler;
import javax.tools.ToolProvider;

public class CompilerInfo {
  public static void main(String[] args) {
    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
    System.out.println("Supported source versions:");
    Set<SourceVersion> srcVer = compiler.getSourceVersions();
    for (SourceVersion sv : srcVer)
      System.out.println("  " + sv.name());

    int nargs = compiler.isSupportedOption(args[0]);
    if (nargs == -1)
      System.out.println("Option " + args[0] + " is not supported");
    else
      System.out.println("Option " + args[0] + " takes " + nargs + " arguments");
  }
}