Skip to content

Commit cf74ccd

Browse files
author
chenzhuo
committed
so cool
1 parent bc9a7bf commit cf74ccd

11 files changed

Lines changed: 305 additions & 2 deletions

File tree

‎src/main/java/com/concurrent/cyclicbarrierlearn/map/HashMapTest.java‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@ public class HashMapTest {
1515

1616
public static void main(String[] args) throws InterruptedException {
1717
Thread t1 = new Thread(() -> {
18-
for (int i = 1; i <= 100000; i++) {
18+
for (int i = 1; i <= 100; i++) {
1919
int result = i;
2020
new Thread(() -> hashMap.put(result, result), "cc" + i).start();
2121
}
@@ -24,7 +24,7 @@ public static void main(String[] args) throws InterruptedException {
2424
t1.start();
2525
Thread.sleep(5000);
2626
System.err.println("11");
27-
for (int i = 1; i <= 100000; i++) {
27+
for (int i = 1; i <= 100; i++) {
2828
Integer value = (Integer) hashMap.get(i);
2929
if (value == null) {
3030
System.out.println(i + "数据丢失");

‎src/main/java/com/datastructure/Iphone.java‎

Lines changed: 20 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,20 @@
1+
package com.datastructure;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/8 15:14
7+
**/
8+
public class Iphone {
9+
int length = 138;
10+
int width = 67;
11+
int height = 7;
12+
int weight = 143;
13+
int ram = 2;
14+
int rom = 16;
15+
int pixel = 1200;
16+
17+
public static void main(String[] args) {
18+
System.err.println("args:" + args.length);
19+
}
20+
}

‎src/main/java/com/enums/SwitchEnumTest.java‎

Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,26 @@
1+
package com.enums;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/8 16:55
7+
**/
8+
public class SwitchEnumTest {
9+
public static void main(String[] args) {
10+
11+
TestEnums testEnums = TestEnums.A;
12+
System.err.println(testEnums.ordinal());
13+
switch (testEnums) {
14+
default:
15+
break;
16+
case A:
17+
System.err.println("hello word");
18+
break;
19+
case H:
20+
System.err.println("hello word");
21+
break;
22+
}
23+
24+
25+
}
26+
}

‎src/main/java/com/jvm/bytecode/A.java‎

Lines changed: 37 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,37 @@
1+
package com.jvm.bytecode;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/9 10:55
7+
**/
8+
public class A {
9+
10+
11+
}
12+
13+
class C {
14+
static {
15+
System.out.println("C init");
16+
}
17+
18+
public C() {
19+
System.out.println("C Instance");
20+
}
21+
22+
}
23+
24+
class B extends C {
25+
static {
26+
System.out.println("B init");
27+
}
28+
29+
public B() {
30+
System.out.println("B Instance");
31+
}
32+
public static void main(String[] args) {
33+
C c = new B();
34+
}
35+
36+
}
37+

‎src/main/java/com/jvm/bytecode/Changeable.java‎

Lines changed: 25 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,25 @@
1+
package com.jvm.bytecode;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description 可变参数
6+
* @Date 2019/7/9 14:12
7+
**/
8+
abstract class Changeable {
9+
/**
10+
* 有意思的代码
11+
*
12+
* @param obj
13+
* @param args
14+
*/
15+
abstract void invoke(Object obj, Object... args);
16+
17+
/**
18+
* 有意思的代码2
19+
*
20+
* @param s s
21+
* @param object obj
22+
* @param args args
23+
*/
24+
abstract void invoke(String s, Object object, Object... args);
25+
}

‎src/main/java/com/jvm/bytecode/ChangeableSubclass.java‎

Lines changed: 40 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,40 @@
1+
package com.jvm.bytecode;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/9 14:13
7+
**/
8+
public class ChangeableSubclass extends Changeable {
9+
10+
@Override
11+
void invoke(Object obj, Object... args) {
12+
System.err.println("this is method first");
13+
}
14+
15+
@Override
16+
void invoke(String s, Object object, Object... args) {
17+
System.err.println("this is method second");
18+
}
19+
20+
void test1(Object object, Object ib) {
21+
System.err.println("method first");
22+
23+
}
24+
25+
void test1(String hello, Object o) {
26+
System.err.println("method second");
27+
28+
}
29+
30+
public static void main(String[] args) {
31+
/* Changeable changeable = new ChangeableSubclass();
32+
changeable.invoke(null, 1);
33+
changeable.invoke(null, 1, 2);
34+
changeable.invoke(null, new Object[]{1});*/
35+
ChangeableSubclass subclass = new ChangeableSubclass();
36+
subclass.test1(1, 1);
37+
subclass.test1(111, 11);
38+
39+
}
40+
}

‎src/main/java/com/jvm/bytecode/Clientele.java‎

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,10 @@
1+
package com.jvm.bytecode;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/9 16:24
7+
**/
8+
public interface Clientele {
9+
boolean isVIP();
10+
}

‎src/main/java/com/jvm/bytecode/ClienteleImpl.java‎

Lines changed: 47 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,47 @@
1+
package com.jvm.bytecode;
2+
3+
import java.util.Random;
4+
5+
/**
6+
* @author by chenzhuo
7+
* @Description
8+
* @Date 2019/7/9 16:25
9+
**/
10+
public class ClienteleImpl {
11+
12+
public double after(double h, Clientele i) {
13+
return h * 0.8d;
14+
}
15+
}
16+
17+
class ClinetChild extends ClienteleImpl implements Clientele {
18+
19+
@Override
20+
public double after(double h, Clientele i) {
21+
// invokeinterface #2, 1
22+
// InterfaceMethod com/jvm/bytecode/Clientele.isVIP:()Z
23+
if (i.isVIP()) {
24+
//invokestatic
25+
return h * problem();
26+
}
27+
//invokespecial
28+
return super.after(h, i);
29+
30+
}
31+
32+
@Override
33+
public boolean isVIP() {
34+
return true;
35+
}
36+
37+
public static double problem() {
38+
//invokespecial, 然后 invokevirtual
39+
return new Random().nextDouble()
40+
+ 0.8d;
41+
}
42+
43+
public static void main(String[] args) {
44+
ClinetChild clinetChild = new ClinetChild();
45+
clinetChild.after(100,clinetChild);
46+
}
47+
}

‎src/main/java/com/jvm/bytecode/Initializer.java‎

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
1+
package com.jvm.bytecode;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/8 18:26
7+
**/
8+
public class Initializer {
9+
static int a;
10+
static int b;
11+
static {
12+
a = 1;
13+
b = 2;
14+
}
15+
16+
public static void main(String[] args) {
17+
18+
}
19+
}

‎src/main/java/com/jvm/bytecode/Passenger.java‎

Lines changed: 41 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,41 @@
1+
package com.jvm.bytecode;
2+
3+
/**
4+
* @author by chenzhuo
5+
* @Description
6+
* @Date 2019/7/9 14:06
7+
**/
8+
abstract class Passenger {
9+
abstract void passThroughImmigration();
10+
11+
@Override
12+
public String toString() {
13+
return super.toString();
14+
}
15+
}
16+
17+
class Fore extends Passenger {
18+
19+
@Override
20+
void passThroughImmigration() {
21+
System.out.println("do some");
22+
}
23+
}
24+
25+
class Chinese extends Passenger {
26+
27+
@Override
28+
void passThroughImmigration() {
29+
System.out.println("chinese do some");
30+
}
31+
32+
void visitDutyFreeShop() {
33+
System.out.println("chinese do visitDutyFreeShop");
34+
}
35+
36+
public static void main(String[] args) {
37+
Passenger passenger = new Chinese();
38+
passenger.passThroughImmigration()
39+
;
40+
}
41+
}

0 commit comments

Comments
 (0)