Example usage for java.lang Character isDigit

Introduction

In this page you can find the example usage for java.lang Character isDigit.

Prototype

public static boolean isDigit(int codePoint)

Source Link

Document

Determines if the specified character (Unicode code point) is a digit.

Usage

From source file:Main.java

public static boolean isNumber(String str) {
    boolean check = true;
    for (int i = 0; i < str.length(); i++) {
        if (!Character.isDigit(str.charAt(i))) {
            check = false;/*from   w w w  . ja  v a  2  s .c o  m*/
            break;
        }
    }
    return check;
}

From source file:Main.java

public static boolean isAllDigit(String str) {
    if (!str.equals("") && str.length() > 0) {
        int len = 0;
        for (int idx = 0; idx < str.length(); idx++) {
            if (Character.isDigit(str.charAt(idx))) {
                len++;//  w  w  w.j  a  v  a  2 s  .  c o m
            }
        }
        if (len == str.length()) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

private static String getDigitsOnly(String s) {
    StringBuffer digitsOnly = new StringBuffer();
    char c;//from   w w w  . j  a  v a  2 s.c  om
    for (int i = 0; i < s.length(); i++) {
        c = s.charAt(i);
        if (Character.isDigit(c)) {
            digitsOnly.append(c);
        }
    }
    return digitsOnly.toString();
}

From source file:Main.java

public static boolean isNum(String content) {
    if (content.length() != 6) {
        return false;
    }//from ww  w .  java 2 s .c  o m
    for (int i = 0; i < content.length(); i++) {
        char c = content.charAt(i);
        if (!Character.isDigit(c)) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static boolean isNumber(String s) {
    char ch;/*from  w  w  w  .ja va2  s.  c  o  m*/
    int id, len;
    boolean valid = true;

    len = s.length();
    for (int i = 0; i < len; i++) {
        ch = s.charAt(i);
        if (!(Character.isDigit(ch) || ch == '-' || ch == '+' || ch == '.'))
            return false;
    }

    return true;
}

From source file:Main.java

public static boolean isWholePositiveNumber(String value) {
    if (value == null) {
        return false;
    }/*from  www  . j  a  v  a2s .  com*/
    for (char c : value.toCharArray()) {
        if (!Character.isDigit(c)) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static String computePhraseShape(String x) {
    StringBuilder buf = new StringBuilder();
    char lastc = 0;
    for (int i = 0; i < x.length(); i++) {
        char c = x.charAt(i);
        if (Character.isDigit(c))
            c = '0';
        else if (Character.isLetter(c))
            c = Character.isLowerCase(c) ? 'a' : 'A';
        else if (Character.isWhitespace(c) || Character.isSpaceChar(c))
            c = ' ';
        if (c != lastc)
            buf.append(c);//from  ww w  .  j  a v  a2  s .  co m
        lastc = c;
    }
    return buf.toString();
}

From source file:Main.java

public static boolean isNumeric(Object obj) {
    if (obj == null) {
        return false;
    }/*w  ww .j a  v a 2 s  .  com*/
    String str = obj.toString();
    int sz = str.length();
    for (int i = 0; i < sz; i++) {
        if (!Character.isDigit(str.charAt(i))) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static boolean isPasswordValid(String password) {

    if (password.length() != 6)
        return false;

    for (int i = 0; i < password.length(); i++) {
        if (!Character.isDigit(password.charAt(i)))
            return false;
    }/*from www  .j  av  a2  s .com*/

    return true;
}

From source file:Main.java

public static String stripNonNumeric(String str) {
    if (str == null)
        return null;
    String s = "";

    int n = str.length();
    char c;//from  w ww  .  ja  v a 2s  .  com
    for (int i = 0; i < n; i++) {
        c = str.charAt(i);
        if (Character.isDigit(c))
            s += c;
    }

    return s;
}