Commons Lang, a package of Java utility classes for the classes that are in java.lang s hierarchy, or are considered to be so standard as to justify existence in java.lang.-Commons Lang, a package of Java utility classes for the class

Applet Name: navCube Applet Source: navCube.java Import(s): java.applet, java.awt, java.awt.image, java.lang, java.net, java.util Feature(s): image, animation, network, mouse -Applet Name: navCube Applet Source: navCube.java Import (s): j

Applet Name: Sentence Applet Source: Sentence.java Import(s): java.applet, java.awt, java.io, java.lang, java.util Feature(s): text, image, animation, mouse -Applet Name: Sentence Applet Source: Sentence.java Import (s): java.applet, java.aw

Applet Name: Scroll Text Applet Source: ScrollText.java Import(s): java.awt, java.lang, java.util, java.applet Feature(s): text-Applet Name: Scroll Text Applet Source: ScrollText.java Import (s): java.awt, java.lang, java.util, java.applet F

在java.lang包中定义了Integer类作为int数据类型的对等类，其中定义了如下方法： public static Integer valueOf(String s) throws NumberFormatException 用于将字符串s转换成Integer对象。当s不符合整数格式时，该方法抛出NumberFormatException异常。请编写简单程序转换一字符串为Integer对象，用2种方法抛出NumberFormatException异常：一种由程序本身捕获并处理异常