I have below string

```
String str="select * from m_menus;

select * from m_roles";

```

I want above string in one line
like

```
String str="select * from m_menus;select * from m_roles";

```

I have tried 

```
str1=str.replace("[\r\n]+", " "); 

```

and also

```
str1=str.replace("\n"," "); 

```

Both are not working.