How can I make a copy of a string that is not an alias, but a copy of all the characters that make up the string?

Ted pottel :

I would like to make a copy of a string and then have the ability to make changes to the copy without changing the whole string. I tried using String strTemplateTemp=new String(strTemplate); instead of String strTemplateTemp=strTemplate; I also tried using clone but got an error saying the clone method was not visible: String strTemplateTemp=strTemplate.clone();

My code

DefaultListModel<String> getAllMacrows()
{
    DefaultListModel<String> rows= new DefaultListModel<String>();
    int pes=0;
    int nameStart;
    int parEnd;     
    String row;
    String strTemplateTemp=new String(strTemplate);

    strTemplateTemp=strTemplateTemp.replace("\n"," ");
    // now both strTemplateTemp and  strTemplate have chnaged
    // want just strTemplateTemp to chnage

SDJ :

In Java String instances are immutable, so it is not possible to change the string (i.e., have a side effect). The statement:

 strTemplateTemp=strTemplateTemp.replace("\n"," ");

Creates a new string and assigns a reference to the new string to the variable strTemplateTemp.

Strings are constant; their values cannot be changed after they are created. String buffers support mutable strings. Because String objects are immutable they can be shared. java.lang.String

See this post for details.

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