replace string by char, string, string array - Android java.lang

Android examples for java.lang:String Replace

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Description

replace string by char, string, string array

Demo Code

public class Main{

    public static String replace(String s, char oldSub, char newSub) {
        return replace(s, oldSub, Character.valueOf(newSub));
    }//from  w  w  w .  ja v  a2 s. co m
    public static String replace(String s, char oldSub, String newSub) {
        if ((s == null) || (newSub == null)) {
            return null;
        }

        char[] c = s.toCharArray();

        StringBuffer sb = new StringBuffer();

        for (int i = 0; i < c.length; i++) {
            if (c[i] == oldSub) {
                sb.append(newSub);
            } else {
                sb.append(c[i]);
            }
        }

        return sb.toString();
    }
    public static String replace(String s, String oldSub, String newSub) {
        if ((s == null) || (oldSub == null) || (newSub == null)) {
            return null;
        }

        int y = s.indexOf(oldSub);

        if (y >= 0) {
            StringBuffer sb = new StringBuffer();
            int length = oldSub.length();
            int x = 0;

            while (x <= y) {
                sb.append(s.substring(x, y));
                sb.append(newSub);
                x = y + length;
                y = s.indexOf(oldSub, x);
            }

            sb.append(s.substring(x));

            return sb.toString();
        } else {
            return s;
        }
    }
    public static String replace(String s, String[] oldSubs,
            String[] newSubs) {
        if ((s == null) || (oldSubs == null) || (newSubs == null)) {
            return null;
        }

        if (oldSubs.length != newSubs.length) {
            return s;
        }

        for (int i = 0; i < oldSubs.length; i++) {
            s = replace(s, oldSubs[i], newSubs[i]);
        }

        return s;
    }
    public static String replace(String s, String[] oldSubs, char[] newSubs) {
        if ((s == null) || (oldSubs == null) || (newSubs == null)) {
            return null;
        }

        if (oldSubs.length != newSubs.length) {
            return s;
        }

        for (int i = 0; i < oldSubs.length; i++) {
            s = replace(s, oldSubs[i], String.valueOf(newSubs[i]));
        }
        return s;
    }

}

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