circle - JAVA: 8 errors, need correcting -

i have assignment computer science class. have put need in code, can not figure out how debug it. getting 8 errors, need these fixed without taking out important code.

import java.awt.*; import java.io; import java.lang.object.*; import java.util.scanner; import java.lang.math;  public class circle() {  public double xcor; public double ycor; public double r; public circle() { xcor = 5.0; ycor = 5.0; r = math.pi; }  public static void main(string args[]) {  public circle(double a, double b, double c) {  xcor = a; ycor = b; r = c; }  circle c1 = new circle(); circle c2 = new circle(1.0, 3.0, 2.0);  c1.x = c1.x + c1.r; c2.r = 1.0 + c2.y; c1.r = 2.0;  double n; n = c1.getarea(); system.out.println(“circle1’s area “ + n);  system.out.println(“the area of circle radius 3 is:”); calcareaforthisradius(3); }  public double getarea()  { return math.pi * r * r; }  public static calcareaforthisradius(double radius) { return radius * radius * math.pi;  } } } 

here advice (to new java programmer) how approach problem.

1. read compilation error messages. try understand saying. doesn't work because compiler errors based on compiler (writer) thinks probably trying do, , easy confuse it.

2. read own code carefully. silly typos make huge difference.

3. if compilation error doesn't seem make sense, go lecture handouts / text books / online tutorials , compare syntax using in code syntax in examples¹.

   for instance, code says:

       public class circle()  { 

   if @ examples of classes, should notice different between code , examples. round brackets should not there.

4. correcting errors can understand cause of other (inexplicable) errors disappear. sometime, bad syntax can confuse compiler sufficiently produces phantom errors elsewhere in code.

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a couple more hints:

1. in java important capitalization right. circle , circle different identifiers.

2. in java, every class should in separate file. (should ...)

3. in java, constructs must nested, , every { should have matching }.

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^{1 - non-beginner programmer (e.g. 3rd year cs student) advise differently. them advise consulting syntax specification programming language. learn "read" bnf / ebnf / syntax diagrams ... or whatever notation used.}