get Size String - Java java.lang

Java examples for java.lang:byte Array to String

Description

get Size String

Demo Code

/*/*from ww w  .j  a v a 2s.  c om*/
 * Copyright (c) 2013 mellowtech.org.
 *
 * The contents of this file are subject to the terms of one of the following
 * open source licenses: Apache 2.0 or LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL
 * 1.0 (the "Licenses"). You can select the license that you prefer but you may
 * not use this file except in compliance with one of these Licenses.
 *
 * You can obtain a copy of the Apache 2.0 license at
 * http://www.opensource.org/licenses/apache-2.0
 *
 * You can obtain a copy of the LGPL 3.0 license at
 * http://www.opensource.org/licenses/lgpl-3.0
 *
 * You can obtain a copy of the LGPL 2.1 license at
 * http://www.opensource.org/licenses/lgpl-2.1
 *
 * You can obtain a copy of the CDDL 1.0 license at
 * http://www.opensource.org/licenses/cddl1
 *
 * You can obtain a copy of the EPL 1.0 license at
 * http://www.opensource.org/licenses/eclipse-1.0
 *
 * See the Licenses for the specific language governing permissions and
 * limitations under the Licenses.
 */

public class Main{
    public static void main(String[] argv) throws Exception{
        long bytes = 2;
        System.out.println(getSizeString(bytes));
    }
    static final long KB = 1024;
    static final long MB = 1024 * 1024;
    static final long GB = 1024 * 1024 * 1024;
    public static final String getSizeString(long bytes) {
        if (bytes < 0)
            return "";
        if (bytes < KB)
            return "" + bytes + " B";
        else if (bytes < MB)
            return "" + DataTypeUtils.fmt((double) bytes / KB) + " KB";
        else if (bytes < GB)
            return "" + DataTypeUtils.fmt((double) bytes / MB) + " MB";
        else
            return "" + DataTypeUtils.fmt((double) bytes / GB) + " GB";
    }
}

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