Something
public text v1 · immutableWelcome to DrJava.
> import java.lang.StringBuffer;
> StringBuffer s = new StringBuffer()
> s.append("bam")
AmbiguousMethodException: Both methods match: public synchronized java.lang.StringBuffer java.lang.StringBuffer.append(java.lang.String), and public volatile java.lang.AbstractStringBuilder java.lang.StringBuffer.append(java.lang.String)
>