String line = console.readLine() StringTokenizer st = new StringTokenizer(line)

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Presentation transcript:

String line = console.readLine()

StringTokenizer st = new StringTokenizer(line)

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens()

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken()

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow false

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow false

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow false tokenizer is empty (but line is untouched)

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow false thus st = new StringTokenizer(line) allows us to reprocess the string (if we need to)

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow false thus st = new StringTokenizer(line) allows us to reprocess the string (if we need to)

String line = console.readLine() StringTokenizer st = new StringTokenizer(line) st.hasMoreTokens() true String token = st.nextToken() process the token somehow false thus st = new StringTokenizer(line) allows us to reprocess the string (if we need to) // sum is defined and initialized to zero outside try { int number = Integer.parseInt(token); sum = sum + number; } catch (Exception e) { System.out.println(token + “ not a number!”); }