cucumber testing java

Packageswingtest;Importjava.awt.BorderLayout;Importjava.awt.event.ActionEvent;ImportJava.awt.event.ActionListener;Importjavax.swing.*; Public classHelloAppextendsjframe{ Public Static voidmain (String [] args) {Swingutilities.invokelater (NewRunnable () { Public voidrun () {HelloApp Inst=NewHelloApp (); Inst.setlocationrelativeto (NULL); Inst.setvisible (true); } } ); } PublicHelloApp () {Super(); Initgui (); } Private voidInitgui () {Try{setdefault

() means that the thread is joined in the process called another thread.? Stop thread: After the thread finishes the run () method, it enters dead, and the thread entering dead cannot call the start () method again. Otherwise, a Illegalthreadstateexception exception is thrown.Import Java.util.Arrays;? Copyonwritearrayset operation of the list interface, when an instance of this class is written, a new array is created internally, the reference to the original array index is copied, and a write