java.awt.Choice.select(Choice.java:430)
我致力于图像分割,这是我的图像选择代码java.awt.Choice.select(Choice.java:430),java,exception,image-processing,Java,Exception,Image Processing,我致力于图像分割,这是我的图像选择代码 m_ImageChoice = new Choice(); for ( int i = 0; i < m_Images.size(); i++ ) { m_ImageChoice.add( ( String ) m_Descriptions.get( i ) ); } m_ImageChoice.select( 0 ); m_ImageChoice.setBounds( 20, 270, 230, 30 ); m_ImageChoice.
m_ImageChoice = new Choice();
for ( int i = 0; i < m_Images.size(); i++ )
{
m_ImageChoice.add( ( String ) m_Descriptions.get( i ) );
}
m_ImageChoice.select( 0 );
m_ImageChoice.setBounds( 20, 270, 230, 30 );
m_ImageChoice.addItemListener( this );
add( m_ImageChoice );
m_ImageChoice=newchoice();
对于(int i=0;i
但当我运行小程序时,它会抛出异常
java.lang.IllegalArgumentException:非法选择项位置:0
在java.awt.Choice.select(Choice.java:430)
我怎样才能修好它?:
抛出:
IllegalArgumentException
-如果指定位置大于项数或小于零
您的参数不小于零,因此它必须“大于项数”。如果是这种情况,m_Images.size()
为零
(实际上,这里的Javadoc中有一个输入错误,应该是“大于或等于”,因为)