StringBuilder trim - Java java.lang

Java examples for java.lang:StringBuilder

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Description

StringBuilder trim

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        StringBuilder builder = new StringBuilder();
        trim(builder);/*w ww.ja va2s. co m*/
    }

    public static void trim(StringBuilder builder) {
        if (builder == null) {
            throw new NullPointerException();
        }
        while ((builder.length() > 0)
                && (Character.isWhitespace(builder.charAt(0)))) {
            builder.deleteCharAt(0);
        }
        while ((builder.length() > 0)
                && (Character
                        .isWhitespace(builder.charAt(builder.length() - 1)))) {
            builder.deleteCharAt(builder.length() - 1);
        }
    }
}

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