Example usage for java.lang StringBuilder charAt

Introduction

In this page you can find the example usage for java.lang StringBuilder charAt.

Prototype

char charAt(int index);

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:org.cryptomator.ui.model.Vault.java

/**
 * Tries to form a similar string using the regular latin alphabet.
 * /*from w  w  w.  j ava 2  s.  co m*/
 * @param string
 * @return a string composed of a-z, A-Z, 0-9, and _.
 */
public static String normalize(String string) {
    String normalized = Normalizer.normalize(string, Form.NFD);
    StringBuilder builder = new StringBuilder();
    for (int i = 0; i < normalized.length(); i++) {
        char c = normalized.charAt(i);
        if (Character.isWhitespace(c)) {
            if (builder.length() == 0 || builder.charAt(builder.length() - 1) != '_') {
                builder.append('_');
            }
        } else if (c < 127 && Character.isLetterOrDigit(c)) {
            builder.append(c);
        } else if (c < 127) {
            if (builder.length() == 0 || builder.charAt(builder.length() - 1) != '_') {
                builder.append('_');
            }
        }
    }
    return builder.toString();
}

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From source file:hu.javaforum.commons.ReflectionHelper.java

/**
 * Returns the getter method of the field. It is recursive method.
 *
 * @param instanceClass The bean class//from w w  w  . jav  a2 s  .c  om
 * @param instance The bean instance
 * @param fieldName The field name
 * @return The getter method, if it is exists
 * null, if the getter method is not exists
 */
protected static Method getGetterMethod(final Class instanceClass, final Object instance,
        final String fieldName) {
    if ("java.lang.Object".equals(instanceClass.getName())) {
        return null;
    }

    try {
        StringBuilder sb = new StringBuilder(fieldName.length() + GET_WORD.length());
        sb.append(GET_WORD);
        sb.append(fieldName);
        sb.setCharAt(GET_WORD.length(), Character.toUpperCase(sb.charAt(GET_WORD.length())));
        return instanceClass.getDeclaredMethod(sb.toString());
    } catch (NoSuchMethodException except) {
        return getGetterMethod(instanceClass.getSuperclass(), instance, fieldName);
    }
}

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From source file:hu.javaforum.util.internal.ReflectionHelper.java

/**
 * Returns the getter method of the field. It is recursive method.
 *
 * @param instanceClass The bean class// w w  w  .j  av  a 2 s . c o  m
 * @param instance The bean instance
 * @param fieldName The field name
 * @return The getter method, if it is exists
 * null, if the getter method is not exists
 */
protected static Method getGetterMethod(final Class instanceClass, final Object instance,
        final String fieldName) {
    PerfLogger logger = new PerfLogger(LOGGER);

    if ("java.lang.Object".equals(instanceClass.getName())) {
        return null;
    }

    try {
        StringBuilder sb = new StringBuilder(fieldName.length() + GET_WORD.length());
        sb.append(GET_WORD);
        sb.append(fieldName);
        sb.setCharAt(GET_WORD.length(), Character.toUpperCase(sb.charAt(GET_WORD.length())));
        return instanceClass.getDeclaredMethod(sb.toString());
    } catch (NoSuchMethodException except) {
        logger.debug("Invoking %1$s.%2$s() because %3$s", instanceClass.getSuperclass().getName(), fieldName,
                except.getMessage());
        return getGetterMethod(instanceClass.getSuperclass(), instance, fieldName);
    }
}

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From source file:com.viettel.util.StringUtils.java

public static String removeVietMarksFast(String text) {
     StringBuilder sb = new StringBuilder(text);
     for (int i = 0; i < sb.length(); i++) {
         sb.setCharAt(i, removeVietMarksFast(sb.charAt(i)));
     }// ww w  .  j  a v  a  2  s.  c o  m
     return sb.toString();
 }

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From source file:com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocStyleCheck.java

/**
 * Trims any trailing whitespace or the end of Javadoc comment string.
 * @param builder the StringBuilder to trim.
 */// ww  w  .  jav a2 s .  c  o  m
private static void trimTail(StringBuilder builder) {
    int index = builder.length() - 1;
    while (true) {
        if (Character.isWhitespace(builder.charAt(index))) {
            builder.deleteCharAt(index);
        } else if (builder.charAt(index) == '/' && builder.charAt(index - 1) == '*') {
            builder.deleteCharAt(index);
            builder.deleteCharAt(index - 1);
            index--;
            while (builder.charAt(index - 1) == '*') {
                builder.deleteCharAt(index - 1);
                index--;
            }
        } else {
            break;
        }
        index--;
    }
}

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From source file:org.apache.torque.generator.outlet.java.JavadocOutlet.java

/**
 * Removes the trailing characters from a string builder.
 * The characters to be removed are passed in as parameter.
 *
 * @param stringBuilder the string builder to remove the end from, not null.
 * @param removeChars The characters to remove if they appear at the end,
 *        not null.//from   ww  w .  j  a v  a  2  s . co  m
 */
static void removeEnd(StringBuilder stringBuilder, String removeChars) {
    Set<Character> removeCharSet = new HashSet<Character>();
    for (char character : removeChars.toCharArray()) {
        removeCharSet.add(character);
    }
    int index = stringBuilder.length();
    while (index > 0) {
        if (!removeCharSet.contains(stringBuilder.charAt(index - 1))) {
            break;
        }
        index--;
    }
    // index is now last char in String which does not match pattern
    // maybe -1 if all the string matches or the input is empty
    stringBuilder.replace(index, stringBuilder.length(), "");
}

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From source file:DOMTreeTest.java

public static String characterString(CharacterData node) {
        StringBuilder builder = new StringBuilder(node.getData());
        for (int i = 0; i < builder.length(); i++) {
            if (builder.charAt(i) == '\r') {
                builder.replace(i, i + 1, "\\r");
                i++;//from  ww  w.j  a v a2 s . co  m
            } else if (builder.charAt(i) == '\n') {
                builder.replace(i, i + 1, "\\n");
                i++;
            } else if (builder.charAt(i) == '\t') {
                builder.replace(i, i + 1, "\\t");
                i++;
            }
        }
        if (node instanceof CDATASection)
            builder.insert(0, "CDATASection: ");
        else if (node instanceof Text)
            builder.insert(0, "Text: ");
        else if (node instanceof Comment)
            builder.insert(0, "Comment: ");

        return builder.toString();
    }

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From source file:net.objectlab.kit.util.StringUtil.java

public static String removeTrailingChar(final String original, final char charToRemove) {
    final StringBuilder builder = new StringBuilder(original);
    while (builder.length() > 0 && builder.charAt(builder.length() - 1) == charToRemove) {
        builder.deleteCharAt(builder.length() - 1);
    }/*from w ww .  java  2  s .  com*/
    return builder.toString();
}

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From source file:com.itude.mobile.mobbl.core.util.StringUtilities.java

public static String normalizedPath(String path) {
    // try to prevent work in the normal case (the path is already normalized)
    // especially the splitPath method-call is expensive.
    if (path.indexOf('.') < 0 && path.indexOf("//") < 0) {
        // remove trailing / if present
        if (path.endsWith("/"))
            return path.substring(0, path.length() - 1);
        else/*from  w w w  .j  a va 2 s.c  o  m*/
            return path;
    }
    boolean isRelative = !path.startsWith("/");

    StringBuilder result = new StringBuilder();
    for (String component : splitPath(path)) {
        result.append('/').append(component);
    }

    if (isRelative && result.length() > 0 && result.charAt(0) == '/') {
        return result.substring(1);
    } else {
        return result.toString();
    }
}

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From source file:org.cocos2dx.lib.Cocos2dxBitmap.java

private static String refactorString(String str) {
    // Avoid error when content is ""
    if (str.compareTo("") == 0) {
        return " ";
    }/*from  w  w  w. j  a  va 2 s  . com*/

    /*
     * If the font of "\n" is "" or "\n", insert " " in front of it.
     * 
     * For example:
     * "\nabc"     -> " \nabc"
     * "\nabc\n\n" -> " \nabc\n \n"
     */
    StringBuilder strBuilder = new StringBuilder(str);
    int start = 0;
    int index = strBuilder.indexOf("\n");
    while (index != -1) {
        if (index == 0 || strBuilder.charAt(index - 1) == '\n') {
            strBuilder.insert(start, " ");
            start = index + 2;
        } else {
            start = index + 1;
        }

        if (start > strBuilder.length() || index == strBuilder.length()) {
            break;
        }

        index = strBuilder.indexOf("\n", start);
    }

    return strBuilder.toString();
}

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