/* 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
	{
		String input = "[1] testString";
		String[] parts = input.split( " " );
		String part = parts[0];
		String digits = part.replace( "[" , "" ).replace( "]" , "" ) ;
		int number = Integer.parseInt( digits ) ;
 
		System.out.println( number ) ;
 
		int n = Integer.parseInt( "[1] testString".split( " " )[0].replace( "[" , "" ).replace( "]" , "" ) ) ;
		System.out.println( n ) ;
	}
}

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