Tokenizers:

1. StringTokenizer tokenizer = new StringTokenizer(“Example String Here”, delimiter (blank if space));
2. while(tokenizer.hasMoreElements()){
3.         Integer i = Integer.parseInt(tokenizer.nextElement().toString());
4. }

Substring:

1. String full = “Full Text”;
2. String sub = full.substring(5,9);
3. System.out.println(“Will print the word ‘Text’:  ” + sub);

Split:

1. String full = “This is the full text”;
2. String[] = full.split(” “); //or regular expression
3. string.trim();

Character At:

1. char c = string.charAt(7);

Replace:

1. String s = “Hello”;
2. s.replace(‘H’, ‘J’);//turns Hello to Jello
3. s = “Hello”;
4. s.replace(“Hello”, “Jello”);//also turns to Jello

Character Array:

1. char[] cha =  new char[str.length()];
2. for(int i=0;i<str.length();i++){
3.         cha[i] = str.charAt(i);
4. }
5. //toString for printout

From the blog shatos by shatos and used with permission of the author. All other rights reserved by the author.

Tokenizers:

1. StringTokenizer tokenizer = new StringTokenizer(“Example String Here”, delimiter (blank if space));
2. while(tokenizer.hasMoreElements()){
3.         Integer i = Integer.parseInt(tokenizer.nextElement().toString());
4. }

Substring:

1. String full = “Full Text”;
2. String sub = full.substring(5,9);
3. System.out.println(“Will print the word ‘Text’:  ” + sub);

Split:

1. String full = “This is the full text”;
2. String[] = full.split(” “); //or regular expression
3. string.trim();

Character At:

1. char c = string.charAt(7);

Replace:

1. String s = “Hello”;
2. s.replace(‘H’, ‘J’);//turns Hello to Jello
3. s = “Hello”;
4. s.replace(“Hello”, “Jello”);//also turns to Jello

Character Array:

1. char[] cha =  new char[str.length()];
2. for(int i=0;i<str.length();i++){
3.         cha[i] = str.charAt(i);
4. }
5. //toString for printout

From the blog shatos by shatos and used with permission of the author. All other rights reserved by the author.

There are a few basic types of input/output sources that are usually used.

Buffered File In:

1. 1. String file = “file.txt”;
   2. FileReader fReader = new FileReader(file);
   3. BufferedReader bReader= new BufferedReader(fReader);
   4. String s = bReader.readLine();
   5. bReader.close();

Buffered File Out:

1. 1. String fileOut = “fileOut.txt”);
   2. FileWriter fWrite = new FileWriter(fileOut);
   3. BufferedWriter bWrite = new BufferedWriter(fWrite);
   4. bWrite.write(“Anything”, offset, length);
   5. bWrite.close();

Standard In (Usually a Keyboard):

1. 1.  InputStreamReader cin = new InputStreamReader(Sytem.in);
   2.  char c = (char) cin.read();

Standard Out (Console):

1. 1. System.out.print(“System.out is already setup”);

From the blog shatos by shatos and used with permission of the author. All other rights reserved by the author.

There are a few basic types of input/output sources that are usually used.

Buffered File In:

1. 1. String file = “file.txt”;
   2. FileReader fReader = new FileReader(file);
   3. BufferedReader bReader= new BufferedReader(fReader);
   4. String s = bReader.readLine();
   5. bReader.close();

Buffered File Out:

1. 1. String fileOut = “fileOut.txt”);
   2. FileWriter fWrite = new FileWriter(fileOut);
   3. BufferedWriter bWrite = new BufferedWriter(fWrite);
   4. bWrite.write(“Anything”, offset, length);
   5. bWrite.close();

Standard In (Usually a Keyboard):

1. 1.  InputStreamReader cin = new InputStreamReader(Sytem.in);
   2.  char c = (char) cin.read();

Standard Out (Console):

1. 1. System.out.print(“System.out is already setup”);

Scanners:

1. Scanner in = new Scanner(System.in);
2. int i = in.nextInt();

From the blog shatos by shatos and used with permission of the author. All other rights reserved by the author.