class dosome implements Runnable {
public void run() {
System.out.println("我是子线程!");
??? out.write("Java"+"\n"); //这里怎样利用子线程将”java“字符串输出到文件
}
}
public class q {
public static void main(String[] args) {
System.out.println("我是主线程!");
try{
BufferedWriter out=new BufferedWriter(new FileWriter(args[0]));
out.write("Hello"); //利用主线程将“hello”字符串输出到文件
out.close();
}
catch(Exception e)
{
System.out.println("Error");
e.printStackTrace();
}
dosome ds1 = new dosome();
Thread t1 = new Thread(ds1);
t1.start();
}
}
this.o = out;
} public void run() {
System.out.println("我是子线程!");
try {
o.write("Java" + "\n");
} catch (IOException e) {
e.printStackTrace();
}
}
}public class T1{ public static void main(String[] args) {
System.out.println("我是主线程!");
BufferedWriter out = null;
try {
out = new BufferedWriter(new FileWriter(args[0]));
out.write("Hello"); dosome ds1 = new dosome(out);
Thread t1 = new Thread(ds1);
t1.start();
t1.join(); out.close();
} catch (Exception e) {
System.out.println("Error");
e.printStackTrace();
} }
}