Java String Upper Case toUpperCase(String s)

Description

to Upper Case

License

Apache License

Declaration

static String toUpperCase(String s) 

Method Source Code

//package com.java2s;
/*//from ww  w. j  ava2s  . com
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

public class Main {
    static String toUpperCase(String s) {
        return toASCIIUpperCase(s);
    }

    static String toASCIIUpperCase(String s) {
        int len = s.length();
        StringBuilder buffer = new StringBuilder(len);
        for (int i = 0; i < len; i++) {
            char c = s.charAt(i);
            if ('a' <= c && c <= 'z') {
                buffer.append((char) (c - ('a' - 'A')));
            } else {
                buffer.append(c);
            }
        }
        return buffer.toString();
    }
}

Related

1. toUpperCase(String s)
2. toUpperCase(String s)
3. toUpperCase(String s)
4. toUpperCase(String s)
5. toUpperCase(String s)
6. toUpperCase(String s, int start, int end)
7. toUpperCase(String source)
8. toUpperCase(String src)
9. toUpperCase(String str)