StringBuffer declaration and initialization showing error in Java

Question

I am working with StringBuffer. Using NetBeans 8.1 IDE.

Code I wrote:

package stringbuffer;

import java.lang.*;

public class StringBuffer {
    public static void main(String[] args) {
       StringBuffer sb=new StringBuffer("hello");
    }
}

But this is showing error like this:

What's my problem?

That's because StringBuffer is an actual Java class, and your IDE is confused. Change the name of your class to something else. — markspace
– markspace, Commented Mar 9, 2016 at 4:13

Elliott Frisch · Accepted Answer · 2016-03-09 04:12:53Z

3

You've named your class StringBuffer. So it shadows java.lang.StringBuffer (and you never have to import java.lang.*). Rename your class, or use the fully qualified StringBuffer name.

public class StringBuffer {
    public static void main(String[] args) {
       java.lang.StringBuffer sb=new java.lang.StringBuffer("hello");
    }
}

or

public class MyStringBuffer {
    public static void main(String[] args) {
       StringBuffer sb=new StringBuffer("hello");
    }
}

answered Mar 9, 2016 at 4:12

Elliott Frisch

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