Automatic type conversion and casts (Java programming classical case)

Conversion and automatic type cast:

/**
 * 自动类型转换与强制类型转换
 */
public class Example {
    public static void main(String[] args) {
        byte b = 127;
        char c = 'W';
        short s = 23561;
        int i = 3333;
        long l = 400000L;
        float f = 3.14159F;
        double d = 54.523;
        //低类型向高类型自动转换
        System.out.println("累加byte等于："+b);
        System.out.println("累加char等于："+(b+c));
        System.out.println("累加short等于："+(b+c+s));
        System.out.println("累加int等于："+(b+c+s+i));
        System.out.println("累加long等于："+(b+c+s+i+l));
        System.out.println("累加float等于："+(b+c+s+i+l+f));
        System.out.println("累加double等于："+(b+c+s+i+l+f+d));

        //高类型到低类型的强制转换
        System.out.println("把long强制类型转换为int: "+(int)l);
        //高类型到低类型的转 换会丢失数据
        System.out.println("把long强制类型转换为short: "+(short)l);
        //实数到整数转换 会舍弃小数部分
        System.out.println("把double强制类型转换为int: "+(int)d);
        //整数到字符类型的转换 获取对应编码的字符
        System.out.println("把short强制类型转换为char: "+(char)s);

    }
}

Execution results as shown below:

note:

1. The above type of long code conversion becomes mandatory variable byte type.
2. long type short type to low conversion loss of data occurs.