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importj**ax.swing.JoptioPane;
publicclass


{
publicstaticvoidmain(String[]args){
Joptionpane.showMessageDialog(**ll,"WelcometoJ**a!");
}
}


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importj**ax.swing.JoptioPane;
publicclass


{
publicstaticvoidmain(String[]args){
Joptionpane.showMessageDialog(**ll,"WelcometoJ**a!");
}
}


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imÎÊ´ðportj**ax.swing.*;
publicclasstest2{//ÀàÃûÄãûд
publicstaticvoidmain(String[]args){
JOptionPane.µ¹ÊÒshowMessageDialog(**ll,"WelcometoJ**a!");//JOptionPaneµ¥´ÊÄãд´íÁË
}
}

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