جاوانگارش استاندارد SE

آموزش جاوا


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package org.javacore.base.String; /*
* Copyright [2015] [Jeff Lee]
*
* Licensed 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.
*/
/**
* @author BYSocket
* @since 2016-01-06 19:51:00
* 常见面试题:String作为方法参数传递,另外一个例子 ${@link StringT2}
* 这就叫做“值传递”,即方法操作的是参数变量(也就是原型变量的一个值的拷贝)
* 改变的也只是原型变量的一个拷贝而已,而非变量本身
*/
public class StringT {
public static void main(String[] args) {
String str = "123";
change(str);
System.out.println(str);
}
public static void change(String str) {
str = "456";
}
}


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