单项选择题
使GUI事件处理器生效的方法是:()
A.将事件源向事件处理器注册
B.将事件处理器向事件源注册
C.将事件处理器向事件注册
D.将事件向事件处理器注册
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GUI事件机制的导入包是:()
A.java.awt
B.java.awt.event
C.javax.swing
D.javax.swing.event -
单项选择题
1. class Passer2 { 2. //insert code here 3. static int bigState = 42; 4. public static void main(String [] args) { 5. bigState = p2.go(bigState); 6. System.out.print(bigState); 7. } 8. int go(int x) { 9. return ++x; 10. } 11. } 和4段代码片段: static Passer2 p2 = new Passer2(); final static Passer2 p2 = new Passer2(); private static Passer2 p2 = new Passer2(); final private static Passer2 p2 = new Passer2(); 有多少行分别插入到第2行,可以编译?()
A.0
B.1
C.3
D.4 -
单项选择题
假设在目录myprj/src/school中有Java源文件Student.java,编译后的类文件出现在目录myprj/classes/school中,应该使用下列哪一个命令来执行这个类?()
A.cd myprj/src java ../classes school.Student
B.cd myprj/src/school java –cp ../classes school.Student
C.cd myprj/src/school java –cp ../../classes school.Student
D.cd myprj/src java –cd ../classes school.Student
