java新手代码收集（1）

public class TestOnly {
public static void main(String[] args) {
NumberTest nTest1 = new NumberTest();
NumberTest nTest2 = new NumberTest();
nTest1.num =11;
nTest2.num =22;
System.out.println(nTest1.num+"||"+nTest2.num);

nTest1 = nTest2;
System.out.println(nTest1.num+"||"+nTest2.num);

nTest2.num = 33;
System.out.println(nTest1.num+"||"+nTest2.num);
}
}
class NumberTest {
int num;
}