shorttextfield.java

来自「java编程开发技巧与实例的编译测试通过的所有例程」· Java 代码 · 共 14 行

import java.awt.*;

public class ShortTextField extends TextField
{
	private final static int MAX = 10;
	public String getShortText() throws LongStringException
	{
		if (super.getText().length() <= MAX)
			return super.getText();
		else
			throw new LongStringException("String too long. max: " + MAX);
	}
}