Question

java中，类***没有主方法是怎么回事？

一运行就出现test.Account没有主方法
package test;
public class CharAtString {
public void main(String[]args){
String text="One's left brian has nothing right.\n";
System.out.println("\n第一个left:"+text.indexOf("left"));
}
}

Answer 1

如果你想运行Java程序需要定义一个public static void main (String[]args)
{
String text="One's left brian has nothing right.\n";
System.out.println("\n第一个left:"+text.indexOf("left"));
}

Answer 2

public void main(String[]args){

public static void main(String[]args){

Answer 3

package test;
public class CharAtString {
//类信息
}
public void main(String[]args){
String text="One's left brian has nothing right.\n";
System.out.println("\n第一个left:"+text.indexOf("left"));
}