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Java matcher and pattern code.
I am working with matcher and pattern in Java. I think this test code should work to add and print my desired search but it is not. If anyone can take a look and fix this it would be much appreciated. Note the if I just use the while loop it works fine. It is when I add in the for loop to iterate through the array list is when it prints out blank.
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
lines.add("O#833452-149434
lines.add("SO#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
String so1 = "SO#";
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(i) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
System.out.println(linet);
}
}
}
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
lines.add("O#833452-149434
lines.add("SO#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
String so1 = "SO#";
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(i) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
System.out.println(linet);
}
}
}
_agx_
Could you please post the code as text?
ASKER
public class test {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
lines.add("O#833452-149434
lines.add("SO#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
String so1 = "SO#";
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(i) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
System.out.println(linet);
}
}
}
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
lines.add("O#833452-149434
lines.add("SO#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
String so1 = "SO#";
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(i) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
System.out.println(linet);
}
}
}
It is MUCH better to paste your code into the question than to include a screenshot.
Maybe I have a simple fix I would like to try, I if I have to retype the whole thing I will be moving on.
Maybe I have a simple fix I would like to try, I if I have to retype the whole thing I will be moving on.
ASKER
I paste it in comments. Sorry.
ASKER
I have pasted in orignal question.
It is MUCH better to paste your code into the question than to include a screenshot.And better still to post it in code tags
What are you trying to do exactly?
ASKER
My overall goal is to extract SO#833452-14943408 from the string in the array list from my test string. This is part of a larger program in which I am reading in lines from a file line by line and trying to extract any instance of "SO#" and the subsequent following number and add it to an array list.
ASKER
I have modified the code a bit and I think I am heading in the right direction but now it prints out iterations of the array. Code below.
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test2 {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
String so1 = "SO#";
lines.add("O#833452-149434
lines.add("SO#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(j) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
}
for (int k = 0; k < linet.size(); k++) {
System.out.println(linet.g
}
}
}
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test2 {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
String so1 = "SO#";
lines.add("O#833452-149434
lines.add("SO#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(j) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
}
for (int k = 0; k < linet.size(); k++) {
System.out.println(linet.g
}
}
}
ASKER
So I guess my question becomes a bit easier. Given the updated comment code. I get my end result but I get every iteration of my result and I just want the last one. My problem is how to pass a variable from inside a loop to outside of it or is there another way to write this code. I am new to java.
I get my end result but I get every iteration of my result and I just want the last one.Don't quite follow that. I thought you wanted all SOs? Do you mean you want all unique instances of that or just one? Confused
Also, you're reading finally lines from a file are you?
ASKER
I actually just figured this out. Below is the code that prints the desired output. Thanks
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test2 {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
String so1 = "SO#";
lines.add("SO#833452-14943
lines.add("S)#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(j) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
}
for (int k = 0; k < linet.size(); k++) {
System.out.println(linet.g
}
}
}
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test2 {
public static void main(String[] args) {
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
String so1 = "SO#";
lines.add("SO#833452-14943
lines.add("S)#833452-14943
lines.add("O#833452-149434
lines.add("CASE-1443453931
for (int i = 0; i < lines.size(); i++) {
String line = lines.get(i);
Pattern p = Pattern.compile(so1);
Matcher m = p.matcher(line);
while (m.find() == true) {
int j = m.start();
boolean foundspace = false;
while (foundspace == false) {
if (line.charAt(j) == ' ') {
foundspace = true;
}
j++;
}
String d = line.substring(m.start(), j);
linet.add(d);
}
}
for (int k = 0; k < linet.size(); k++) {
System.out.println(linet.g
}
}
}
I see this is your first question on ExEx. If you are going to be posting more code samples, you might want to use the CODE tags to display your program snippets. You can cut and paste your code into the question, then select it, and click the CODE icon on the menu bar. Ckick on Preview to see the result.
ArrayList<String> linet = new ArrayList<>();
ArrayList<String> lines = new ArrayList<>();
String so1 = "SO#";
lines.add("SO#833452-14943408 PO#Subject: Re: gg - Oops. Your O#purchase order is missing key payment information.PPO O#769117789:C11134 [ ref:_00D30dWxY._5001311TVgB:ref ]");
lines.add("S)#833452-14943408 PO#Subject: Re: gg - Oops. Your O#purchase order is missing key payment information.PPO O#769165189:C11134 [ ref:_00D30dWxY._5001311TVgB:ref ]");
You don't need to do all that space searching btw. Put it in the pattern
ASKER CERTIFIED SOLUTION
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ASKER
Thanks all