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修正创建线程文章中的编辑错误
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‎java/concurrence/CreateThread.md

Lines changed: 70 additions & 88 deletions
Original file line numberDiff line numberDiff line change
@@ -7,28 +7,26 @@
77
（3）调用线程对象的start\(\)方法来启动该线程。
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99
```java
10-
public class FirstThreadTest extends Thread{
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int i = 0;
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//重写run方法，run方法的方法体就是现场执行体
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public void run()
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{
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for(;i<100;i++){
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System.out.println(getName()+" "+i);
17-
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}
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}
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public static void main(String[] args)
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{
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for(int i = 0;i< 100;i++)
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{
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System.out.println(Thread.currentThread().getName()+" : "+i);
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if(i==20)
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{
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new FirstThreadTest().start();
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new FirstThreadTest().start();
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}
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}
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}
10+
public class FirstThreadTest extends Thread {
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int i = 0;
12+
13+
//重写run方法，run方法的方法体就是现场执行体
14+
public void run() {
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for (; i < 100; i++) {
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System.out.println(getName() + " " + i);
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18+
}
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}
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public static void main(String[] args) {
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for (int i = 0; i < 100; i++) {
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System.out.println(Thread.currentThread().getName() + " : " + i);
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if (i == 20) {
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new FirstThreadTest().start();
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new FirstThreadTest().start();
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}
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}
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}
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}
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```
@@ -44,32 +42,27 @@ public class FirstThreadTest extends Thread{
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（3）调用线程对象的start\(\)方法来启动该线程。
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```java
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public class RunnableThreadTest implements Runnable
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{
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private int i;
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public void run()
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{
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for(i = 0;i <100;i++)
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{
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System.out.println(Thread.currentThread().getName()+" "+i);
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}
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}
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public static void main(String[] args)
59-
{
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for(int i = 0;i < 100;i++)
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{
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System.out.println(Thread.currentThread().getName()+" "+i);
63-
if(i==20)
64-
{
65-
RunnableThreadTest rtt = new RunnableThreadTest();
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new Thread(rtt,"新线程1").start();
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new Thread(rtt,"新线程2").start();
68-
}
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}
70-
71-
}
72-
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public class RunnableThreadTest implements Runnable {
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private int i;
47+
48+
public void run() {
49+
for (i = 0; i < 100; i++) {
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System.out.println(Thread.currentThread().getName() + " " + i);
51+
}
52+
}
53+
54+
public static void main(String[] args) {
55+
for (int i = 0; i < 100; i++) {
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System.out.println(Thread.currentThread().getName() + " " + i);
57+
if (i == 20) {
58+
RunnableThreadTest rtt = new RunnableThreadTest();
59+
new Thread(rtt, "新线程1").start();
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new Thread(rtt, "新线程2").start();
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}
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}
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64+
}
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}
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```
7568

@@ -84,46 +77,35 @@ public class RunnableThreadTest implements Runnable
8477
（4）调用FutureTask对象的get\(\)方法来获得子线程执行结束后的返回值，调用get\(\)方法会阻塞线程。
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8679
```java
87-
public class CallableThreadTest implements Callable<Integer>
88-
{
89-
90-
public static void main(String[] args)
91-
{
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CallableThreadTest ctt = new CallableThreadTest();
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FutureTask<Integer> ft = new FutureTask<>(ctt);
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for(int i = 0;i < 100;i++)
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{
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System.out.println(Thread.currentThread().getName()+" 的循环变量i的值"+i);
97-
if(i==20)
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{
99-
new Thread(ft,"有返回值的线程").start();
100-
}
101-
}
102-
try
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{
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System.out.println("子线程的返回值："+ft.get());
105-
} catch (InterruptedException e)
106-
{
107-
e.printStackTrace();
108-
} catch (ExecutionException e)
109-
{
110-
e.printStackTrace();
111-
}
112-
113-
}
114-
115-
@Override
116-
public Integer call() throws Exception
117-
{
118-
int i = 0;
119-
for(;i<100;i++)
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{
121-
System.out.println(Thread.currentThread().getName()+" "+i);
122-
}
123-
return i;
124-
}
125-
126-
}
80+
public class CallableThreadTest implements Callable<Integer> {
81+
82+
public static void main(String[] args) {
83+
CallableThreadTest ctt = new CallableThreadTest();
84+
FutureTask<Integer> ft = new FutureTask<>(ctt);
85+
for (int i = 0; i < 100; i++) {
86+
System.out.println(Thread.currentThread().getName() + " 的循环变量i的值" + i);
87+
if (i == 20) {
88+
new Thread(ft, "有返回值的线程").start();
89+
}
90+
}
91+
try {
92+
System.out.println("子线程的返回值：" + ft.get());
93+
} catch (InterruptedException e) {
94+
e.printStackTrace();
95+
} catch (ExecutionException e) {
96+
e.printStackTrace();
97+
}
98+
}
99+
100+
@Override
101+
public Integer call() throws Exception {
102+
int i = 0;
103+
for (; i < 100; i++) {
104+
System.out.println(Thread.currentThread().getName() + " " + i);
105+
}
106+
return i;
107+
}
108+
}
127109
```
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129111
## 四、创建线程的三种方式的对比

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