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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
 
		System.out.println("찾을말 : (\!?)([0-9a-zA-Z]*)\.equals\(\"(.*)\"\)    ");
		System.out.println("바꿀말 : \1"\3".equals(\2)     ");
 
	}
}

Main.java:13: error: illegal escape character
		System.out.println("??? : (\!?)([0-9a-zA-Z]*)\.equals\(\"(.*)\"\)    ");
		                            ^
Main.java:13: error: illegal escape character
		System.out.println("??? : (\!?)([0-9a-zA-Z]*)\.equals\(\"(.*)\"\)    ");
		                                              ^
Main.java:13: error: illegal escape character
		System.out.println("??? : (\!?)([0-9a-zA-Z]*)\.equals\(\"(.*)\"\)    ");
		                                                      ^
Main.java:13: error: illegal escape character
		System.out.println("??? : (\!?)([0-9a-zA-Z]*)\.equals\(\"(.*)\"\)    ");
		                                                                ^
Main.java:14: error: illegal character: '\'
		System.out.println("??? : \1"\3".equals(\2)     ");
		                             ^
Main.java:14: error: not a statement
		System.out.println("??? : \1"\3".equals(\2)     ");
		                              ^
Main.java:14: error: ';' expected
		System.out.println("??? : \1"\3".equals(\2)     ");
		                               ^
7 errors

Standard output is empty