How to make a local variable accessible outside the loop in java

Question

I have a txt file in while one line is like this :

"Execution Status: Pass"

I want to take the value out : pass from here.

I am using below code :

String patternString1 = "(Execution) (Status:) (.*)";
Pattern patt1 = Pattern.compile( patternString1 );
BufferedReader r = new BufferedReader(new  FileReader( "c:\\abc.txt" ));
String line;
while ( (line = r.readLine()) != null ) {
    String g11 = null; 
    Matcher m1 = patt1.matcher( line );
    while ( m1.find() ) {
        g11=m1.group(3);
        System.out.println(g11+"HI1"); //Line1
    }
    System.out.println(g11+"HI1"); //Line2
}

While Line 1 is giving the desired output as "pass" I am not getting this expected output from Line 2. Could any one of you please help me in accessing the local variable out of the loop?

Answer 1

Could you try changing following line:

while (m1.find())

to

 if(m1.find())

It should give the result you want

Answer 2

How about the easy way:

String result = line.replaceAll(".*: ", "");

This line says "replace everything up to and including colon space with nothing" (ie delete it).

Answer 3

If there is only one instance of this match in single line then use if instead of while (m1.find()) loop or break the loop once match is found.

Sample code:

while ( (line = r.readLine()) != null ) {
    String g11 = null; 
    Matcher m1 = patt1.matcher( line );
    if( m1.find() ) {
        g11=m1.group(3);            
    }
    if(g11 != null){
        System.out.println(g11+"HI1"); //Line2
    }
}

Answer 4

Declare String g11 as a local variable at the start of your method

 String g11="";   -- declare g11 as a local variable
  String patternString1 = "(Execution) (Status:) (.*)";
  Pattern patt1 = Pattern.compile(patternString1);

Add the rest of your code here.........