Try to extract java public method

package triple;

import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

public class JavaFileAnalyser {
	private static Pattern PATTERN ;
	public static void main(String args[]) throws Exception{
		PATTERN = Pattern.compile(".*public(.*)(?:\\s|\\t)(.*)\\((.*)\\).*");
		
		List<String> list = Files.newBufferedReader(
				Paths.get("C:/Java/jdk1.8.0_102/src/javax/script/AbstractScriptEngine.java"),
				Charset.forName("UTF-8"))
		.lines()
		.filter(JavaFileAnalyser::isMethod)
		.map(JavaFileAnalyser::parse)
		.collect(Collectors.toList());
		
		Files.write(Paths.get("C:/Users/****/workspace/FileOpe/result/result.txt"), 
				list, 
				Charset.forName("UTF8"),
                StandardOpenOption.CREATE);
	}
	
	public static boolean isMethod(String str){
		if(PATTERN.matcher(str).find()){
			return true;
		}
		return false;
	}
	
	public static String parse(String str){
		Matcher m = PATTERN.matcher(str); 
		if(m.find()){
			return String.format("Return signature: %s method name:%s argument:%s",m.group(1),m.group(2),m.group(3));
		}
		return "";
				
	}

}

Return signature:Method name:AbstractScriptEngine argument:
Return signature:AbstractScriptEngine method name:argument:Bindings n
Return signature:void method name:setContext argument:ScriptContext ctxt
Return signature:ScriptContext method name:getContext argument:
Return signature:Bindings method name:getBindings argument:int scope
Return signature:void method name:setBindings argument:Bindings bindings, int scope
Return signature:void method name:put argument:String key, Object value
Return signature:Object method name:get argument:String key
Return signature:Object method name:eval argument:Reader reader, Bindings bindings 
Return signature:Object method name:eval argument:String script, Bindings bindings
Return signature:Object method name:eval argument:Reader reader
Return signature:Object method name:eval argument:String script

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