Hilfe bei Benutzung von *.jar bei Compiler

[kieselnator]

Na schön, hier nochmal die Fehler!

MathLib.java:1: package org.junit does not exist
import static org.junit.Assert.*;
                       ^
MathLib.java:2: package org.junit does not exist
import org.junit.*;
^
MathLib.java:7: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testSqrt1() {
     ^
MathLib.java:13: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testSqrt2() {
     ^
MathLib.java:18: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testSqrt3() {
     ^
MathLib.java:24: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testAbs1() {
     ^
MathLib.java:29: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testAbs2() {
     ^
MathLib.java:34: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testAbs3() {
     ^
MathLib.java:39: cannot find symbol
symbol  : class Test
location: class MathLib
    @Test public void testAbs4() {
     ^
MathLib.java:9: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("sqrt(4) should be 2",2.0,d,1e-15);
        ^
MathLib.java:15: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("sqrt(9) should be 3",3.0,d,1e-15);
        ^
MathLib.java:20: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("sqrt(-1) should be NaN",Double.NaN,d,1e-15);
        ^
MathLib.java:26: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("abs(2) should be 2", 2.0, t,1e-15);
        ^
MathLib.java:31: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("abs(0) should be 0", 0.0, t,1e-15);
        ^
MathLib.java:36: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("abs(-3) should be 3", 3.0, t,1e-15);
        ^
MathLib.java:41: cannot find symbol
symbol  : method assertEquals(java.lang.String,double,double,double)
location: class MathLib
        assertEquals("abs(NaN) should be NaN", Double.NaN, t,1e-15);
        ^
16 errors

Das package existiert nicht, darum funzt es nicht.

Egal was ich auch probiert hab, das klappt einfach nicht.

beim -classpath attribut sagt er ja noch nix, aber dannnnn...