public class TestChar{
public static void main (String[] args){
char c1 = 'a';
char c2 = 'A';
char c3 = '1';
char c4 = '张';
System.out.println("c1="+ (int)c1);
System.out.println("c1="+ c2);
System.out.println("c1="+ c3);
System.out.println("c1="+ c4);
}
}
“ char c4 = '张';”这 行,编译出现非法字符