鑷姩杞瀷
class Test {
void test(int i){
System.out.println("i");
}
void test(String s){
System.out.println("s");
}
public static void main(String[] args){
Test t=new Test();
char ch='y';
t.test(y);
}
}
榪愯緇撴灉涓?i",鍦ㄧ紪璇戣嚜鍔ㄦ妸瀛楃鍨嬭漿鎹負鏁村瀷!!
2.Reader/Writer鍙鐞哢nicode瀛楃鐨勮緭鍏ヨ緭鍑恒俧loat鍜宒ouble鍙互閫氳繃stream榪涜I/O
3.綰跨▼
public class Z {
public static void main(String[] args) {
銆銆new Z();
銆銆}
銆銆
銆銆Z() {
銆銆 Z alias1 = this;
銆銆 Z alias2 = this;
銆銆 synchronized(alias1) {
銆銆try {
銆銆 alias2.wait();
銆銆 System.out.println(“DONE WAITING”);
銆銆 }
銆銆 catch (InterruptedException e) {
銆銆 System.out.println(“INTERR UPTED”);
銆銆 }
銆銆 catch (Exception e) {
銆銆System.out.println(“OTHER EXCEPTION”);
銆銆}
銆銆finally {
銆銆 System.out.println (“FINALLY”);
銆銆}
銆銆}
銆銆 System.out.println(“ALL DONE”);
銆銆}
銆銆}
alias1,alias2寮曠敤鍚屼竴涓璞?褰撴墽琛寃ait()鏂規硶鏃?綰跨▼鏀懼純瀵硅薄閿?鍥犳棤notifyAll()鍜宯otify()鏂規硶,{榪欎釜鏂規硶鏄妸瀵硅薄鐨勭瓑寰呮睜涓殑綰跨▼鏀懼叆瀵硅薄鐨勯攣姹?浠ヤ究鑾峰緱瀵硅薄閿亇,鎵浠ュ璞′竴鐩村浜庣瓑寰呯殑鐘舵佷粈涔堜篃涓嶆墦鍗?
13
class Person {
private int a;
public int change(int m){ return m; }
}
public class Teacher extends Person {
public int b;
public static void main(String arg[]){
Person p = new Person();
Teacher t = new Teacher();
int i;
// point x
}
}
A. i = m;
B. i = b;
C. i = p.a;
D. i = p.change(30);
E. i = t.b.
A.m灞鍩熷彉閲?絳変簬鏈畾涔?B.鍦ㄩ潤鎬佹柟娉曚腑涓嶈兘浣跨敤闈為潤鎬佹垚鍛樺彉閲?鍙氳繃綾葷殑瀹炰緥鐨勫紩鐢ㄦ潵璋冪敤.
濡俰=t.b
C.a鏄鏈夋垚鍛?
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