请问Exception in thread "main" java.lang.NoSuchMethodError: main出现这个如何修改?
来源:百度知道 编辑:UC知道 时间:2024/06/29 22:58:15
class MyPoint{
{
int x;
int y;
MyPoint start,end;
{start = new MyPoint();
end = new MyPoint();
start.x = 10;
start.y = 10;
end.x = 20;
end.y = 20;
System.out.println(start.y);
//System.out.println(start.y);
//System.out.println(end.x);
//System.out.println(end.y);
}
}
class MyPoint{
int x;
int y;
public static void main(String args[]){
MyPoint start,end;
start = new MyPoint();
end = new MyPoint();
start.x = 10;
start.y = 10;
end.x = 20;
end.y = 20;
System.out.println(start.y);
System.out.println(start.y);
System.out.println(end.x);
System.out.println(end.y);
}
}
后面三个system.out.println()语句应该不是注释吧?所以我也显示出来了。
java程序如果要执行,必须有一个main()方法,这是程序的入口,另外,要注意代码的缩进(排版),这样便于阅读。
class MyPoint{
int x;
int y;
public static void main(String[] arg)
{MyPoint end;
MyPoint start;
start = new MyPoint();
end = new MyPoint();
start.x = 10;
start.y = 10;
end.x = 20;
end.y = 20;
System.out.println(start.y);
System.out.println(start.y);
System.out.